308 ballistics by the inch

The chops tests ranged in barrel length from 18" down to 3". using Hornady 168gr A-MAX Superformance Match factory ammo. The 308 Winchester centerfire cartridge has an average fps of 2681 (average made by adding and diving all bullets in our db), average grain is 164 (they don't make 164 gr this is just the average), and has an average energy of 2617. Once data was gathered for each cartridge at a given barrel length, the rifle was cleared and the bolt was removed. Your choice. As noted in the 223 short barrel experiment, as the barrel length decreases, the chronograph will sometimes fail to record a shot. The PowerRank is an estimation of the cartridge power. The following is a 1000 yard .308 ballistic chart that was created using our free online ballistic calculator and details all aspects of the bullets trajectory from the millisecond it leaves the barrel until the time it reaches the 1,000 yd mark. site designed and maintained by Coeurbois Graphic Design. At each barrel length, the rifle was fired from a front rest with rear bags, with five rounds of each type of ammunition. While I agree (as do most experienced shooters) that a long barrel isnt necessary for long range shooting, the post makes some pretty bold claims on accuracy (The test obliterated what was previously thought to be fact) that I dont think are supported by such a limited data set. I may wear a lab coat to kick things up another notch next time. In addition to riding on the back of the 7.62 NATOs short-lived military career, the .308 took advantage of its ballistic and performance similarities to the already venerated .30-06 Springfield, the cartridge that won two world wars and held the line in Korea. Wind Components are (Miles per Hour): DownRange: 0.0 Cross Range: 10.0 Vertical: 0.0. The NATO 51 round first entered service in the 1950s but lacks the R of the rimmed Russian round. _gaq.push(['_trackPageview']); Velocity loss can be more extreme with shorter barrel lengths (and bigger cartridges). Try these too.. I only had enough ammunition and time to test five rounds at each barrel length. These figures give this bullet a 4.4 out of 20 power rank using our algorithm. You may not reproduce original text or photos without advanced permission in writing. polygonal rifling + Muzzle: 100 YDS: 200 YDS: Velocity (FPS) 3050: 2691: . The IMI Samson 150 grain FMJ is a 7.62x51mm NATO spec cartridge. Ive shot a lot of different firearms in my life and this wasnt pleasant. I like it a lot. With tunning accuracy is 99.7%. This was with Varget powder. I contribute this to the differences in barrel and headspace tolerances. Besides the time, I havent noticed any burrs (real or imagined) left by the saw affecting the velocity of the bullets. Read on, and it will all make sense. the cylinder gap. A This resulted in a velocity loss of 118 feet/second. The .308 Winchester / 7.62x51mm NATO was created in 1952 and is based on the .300 savage round a round created in 1920. If you think that you discover an error (perhaps a typo) in the data, just drop us a Rifleshooter.com also offers ballistics graphs showing trajectories with different barrel lengths. Super Short Precision Rifles: Is there such thing as a 16.5 .308 Tactical Bolt Action Rifle? The answer may surprise you. We may earn revenue from the products available on this page and participate in affiliate programs. He,he. All content Copyright 1998-2018 Rifleshooter.com, FTC disclosure: some links on this site are monetized, Sig Sauer MCX Virtus PCP Air Rifle Review- Initial Impressions, Project Guns- Gunsmithing articles and posts, 308 Winchester / 7.62x51mm NATO: Barrel Length versus Velocity (28 to 16.5), 223 Remington/5.56mm NATO Barrel length versus Velocity- Short Barrels- 6 to 14 inches. Or are they different? Copyright GunData.org 2015 | Koenig Media, LLC | Links | Sitemap | Advertise. 308 Winchester Barrel Length and Velocity: Winchester 147 grain FMJ, 7.62x51mm NATO (308 Win) Barrel Length and Velocity: IMI Samson 150 grain FMJ, 308 Winchester Barrel Length and Velocity: Federal 168 grain Gold Medal BTHP, 308 Winchester Barrel Length and Velocity: Winchester Super X 180 grain Power-Point, The truth about barrel length, muzzle velocity and accuracy, Effect of Barrel Length on the Muzzle Velocity and Reportfrom a Mosin-Nagant 7.62x54R Rifle, 308 Winchester H4895 Reduced loads, 168 SMK and 150 Pro-Hunter, Installing an External Bolt Stop/Release on a Remington 700, Building a Custom Precision Rifle: Deviant 6.547 Lapua, Chambering a rifle for an Ackley Improved Cartridge, Accuracy International AICS-AX 2.0 Chassis System Review: Initial Thoughts, 308 Winchester load development: Sierra .308 195 gr. Good ergonomics, and a great value for the money. The test protocol was repeated for the next length. For example in this chart I lowered the velocity to . The gun and support equipment werent in much better shape. The results from Rifleshooter.coms .308 barrel cut-down test are quite different than the results we recorded some years ago with a barrel chambered for the 6mmBR cartridge. Fear not. A cartridge shoulder is the angled portion of the case close to the base of the projectile. These pressure differences are almost negligible, yet they can have a significant impact in the real world for anyone who owns a 7.62-chambered firearm or who likes to reload their own ammo. Anyone who uses our data owes him This was the best one. How to Sight in a Scope - Step by Step Guide. The bolt action pistol with a 5 barrel (above). Copyright GunData.org 2015 | Koenig Media, LLC | Links | Sitemap | Advertise. class bullets. IMI 150 grain FMJ 7.62x51m NATO data was gathered down to a 6 barrel length. The 30-30 Winchester 150 gr. The 7.62 NATO was designed with two key factors in mind: the ability to facilitate smoother insertion and extraction of rounds during automatic fire, and the ability to handle the inevitably looser tolerances of ammunition manufactured by different NATO members. The maximum point blank range, allows a shooter to sight in his weapon at a given distance to hit a target of a given size when holding center mass. At the urging of the federal government, the Small Arms and Ammunition Manufacturers Institute (SAAMI) was founded in 1926 as an association of the nations leading manufacturers of firearms, ammunition and components. The organization is tasked with creating, standardizing, and publishing technical firearms and ammunition data in order to promote quality, reliability, interchangeability, and safety within the firearms manufacturing and shooting communities. The testers described their procedure as follows: Ballistic data was gathered using a Magnetospeed barrel mounted ballistic chronograph. contrast, the chamber pressure of 5.56 NATO is only roughly 75% of that, at about 60,000 PSI, while 6.5 Creedmoor and .308 Win have only slightly higher chamber pressures at 62,000 PSI. 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js'; CLICK HERE to Read the Rifleshooter.com Test. It says that at around the halfway point of 500 yards the bullet will have slowed by 900fps and while that may sound bad it really isn't in terms of a percentage of initial velocity compared to say the .223 Remington (would be 1481fps from initial 3214fps) or the 7.62x39mm (would be 1066fps from initial 2349fps). I post it here, for free, so other shooters can learn from it. So it's not a shocker that the .308 would be a good cartridge. My lathe is a two hour round trip to the range. up to you. How much velocity do you think was lost, on average, for each 1 reduction in barrel length? Note: I also fired a 30 shots of the IMI Samson 7.62mm 150 grain FMJ with the 28 and 16.5 lengths- Ill discuss why later. I like them- in some ways you dont lose a lot. Velocity Boundaries (Feet per Second) of: 1740 1460 1460 1460. The .308 Winchester round shoots pretty flat out to 200 yards when it starts to drop. This results in a 7.62 case that is ever so slightly longer than its commercial brother. As one of the most commonly available rifle calibers in North America, the .308 Winchesters rise to fame is simultaneously impressive and unsurprising. In the next frame you can see the gun recoiling (below). Ballistics and Drop for the .308 Winchester (7.62mm NATO) Cartridge Type: Rifle Height: 2.015" Width: 0.473" Average FPS: 2681 Average Energy: 2617 Average Gr: 164 Recoil: 1.95 Power Rank: 4.4 of 20 The .308 Winchester / 7.62x51mm NATO was created in 1952 and is based on the .300 savage round a round created in 1920. photo link: http://rifleshooter.com/wp-content/uploads/2015/01/custom-16.5-rem-700-308.jpg. Youd think I was disappointed, however, there was a smile on my face. Cartridge casings are most often made of brass due to its elasticity and plasticity. The 7.62x51 NATO is a superior round to the .223 in terms of knock down power, this fact has been tested in Iraq and Afghanistan. Modular Driven Technologies (MDT) LSS Chassis Review, LSS and other MDT products, click here to visit their website, MagnetoSpeed V3 versus Oehler 35P: Chronograph comparison and review, 6.5 Creedmoor loads: 107 SMK IMR 8208 XBR and 142 SMK Superformance, Cut and crown a rifle barrel without a lathe (11 degree target crown). A The headspace on this pistol measured 1.630 (SAAMI minimum), this was .003 less that when the barrel was installed on the rifle (1.633). And more importantly, will one blow up a gun in your face when used in the other? Rifleshooter.com also offers ballistics graphs showing trajectories with different barrel lengths. That is actually not correct. Your data showed the 7.6239 mm Russian slowed down from 23 to 24 in barrel length. .308 Win Barrel Cut-Down Test: Velocity vs. Barrel Length, .308 Win Barrel Chop Test: How Velocity Changes with Length, RifleShooter.com .308 Win Barrel Cut-Down Velocity Test, Surprising Results in .223 Rem Barrel Cut-Down Velocity Test, .223 Rem Velocity by Barrel Length Cut-Down Test Results. A. Ive referenced a few other 223 Remington studies in my prior posts. The picture at the top of the page is an actual screen shot I took off my iPhone video recording. However, testing indicates it may not be as much as initially thought. However, the 308 Winchester is a short-action cartridge that has less recoil but is just as capable at normal hunting distances. Out of the 4 recording I made, only two frames contained muzzle flash. Yes, I did for the 223 post. Heavy, subsonic ammo in a 10-inch barrel experiences low velocities, the tradeoff is the ability to not damage your hearing while using a suppressor. When the U.S. Army began developing the 7.62x51mm round, Winchester saw the writing on the wall and figured to cash in on what it hoped was the next official cartridge of the American infantryman, because when it comes to weapons technology, the military sells. In fact the .308 Winchester 165gr bullet is traveling faster at 1000 yards than the .223 or 7.62x39mm at just 500 yds. Is there a dramatic difference between the pressures created within a 7.62 NATO case and a .308 Winchester case? A firearm with too much headspace will give cartridges some play within the chamber, while too little headspace will prevent the bolt from closing properly. This includes detailed charts with inch-by-inch velocity numbers, multiple line charts, and complete data sets for each type of ammo. No, personally, it seems like a silly idea to me. them by name does not constitute an endorsement of any kind. Once data was gathered for each cartridge at a given barrel length, the rifle was cleared and the bolt was removed. Maybe ask the doctorate students at MIT. Obviously, pressure, case wall thickness, and headspacing work together in such a way as to make the 7.6251 NATO and the .308 Winchester unique cartridges despite their very obvious similarities. 308 Winchester/ 7.62x51mm NATO Comparison of velocity data. Much Different Results with 6mmBR and a Longer Barrel Its global proliferationin big game hunting rifles is matched by few other cartridges. My calculations assume a 1.75 sight over bore height. When that happens Ill post a link there. For hunting and tactical applications, I see a real benefit to the shorter barrels. data for your own use. Compare the above rates of loss to those found in308 Winchester / 7.62x51mm NATO: Barrel Length versus Velocity (28 to 16.5), where the Winchester 147 grain FMJ averaged 24.6 feet/second per inch of barrel, IMI 150 grain FMJ averaged 22.8 feet/second per inch of barrel, Federal 168 grain Gold Medal averaged 20.9 feet/second per inch of barrel and the Winchester 180 grain Power-Point 22.5 feet/second per inch of barrel. My 16.5 308 Winchester (above) is a fun little rifle. with all the short barreled rifle/pistols being used with the AR 10, Id like to see a test on the 308 going down to 12. This was an average decrease of 73.1 feet/second per inch of barrel length. Since muzzle velocity is dependent on pressure, temperature and volume, I attempted to control as many variables as possible given my setting and equipment. Ive been beating on the 510 and 517 for a while. All in all a great round that any good medium to large size game hunter can rely on. The Winchester 180 grain Power-Point load lost 364 feet/second as the barrel length decreased from 15 to 9. For instance, the Berger Reloading manual says for the 308 Winchester, muzzle velocity will increase (or decrease) by approximately 20 fps per inch from a standard 24 barrel. All shooting was done from a bench, with a Sinclair rest and rear bag. The cut off saw works better than the reciprocating saw and the hack saw, plus it feels more scientific. ga.src = ('https:' == document.location.protocol ? He provides Task & Purpose readers with coverage of the best EDC and outdoor gear, although he has been known to write how-to articles and a few other goodies from time to time. The test protocol was repeated for the next length. The first number is the value of this cartridge, and the last number is the value of the most powerful round in our bullet database. Contrary to the popular urban legend, 7.62 NATO casings do indeed have thicker walls than .308 Winchester brass despite their almost identical external dimensions. Average velocity and standard deviation was logged for each round. The velocity and standard deviation are recorded. This resulted in a velocity loss of 137 feet/second. Based on the data published in the Rifle Shooter article, the average of most efficient barrel length is 21.7 inches. Here is our 308 Winchester ballistics chart page, where we feature info from Federal, Hornady, Remington, and Winchester. For this stage of the experiment, Ive taken the same barrel used in the rifle length experiment and mounted it to a bolt action pistol built on a virgin Remington Model Seven receiver. var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true; Cartridge Type: RifleHeight: 2.015"Width: 0.473"Average FPS: 2681Average Energy: 2617Average Gr: 164Recoil: 1.95Power Rank: 4.4 of 20. Published Mar 29, 2021 12:55 PM EDT. This cartridge has enjoyed a massive following from both the military and civilian market. This was an average decrease of 77.6 feet/second per inch of barrel length. At each barrel length, the rifle was fired from a front rest with rear bags, with five rounds of each type of ammunition. I leave my Oelher 35P in the truck now. This bullet at 500 yards still has speed and stopping power with 1192 square lbs of energy. To make the test even more interesting, four different types of .308 Win factory ammunition were chronographed at each barrel length. Note the change in MPBR averages 27 yards with an 11.5 inch change in barrel length. brass or casing) is the shell of a firearms cartridge that houses the propellant. There are plenty of good sources of information on this topic. It seems like the 7.62x39mm Russian performance is optimum at a 16 barrel length. real* world weapons: Cor Bon 165 gr. The barrel was cut off using a cold saw. So, the natural question is this: can you shoot 7.62 ammo through a .308-chambered firearm? })(); To comment on a post, click Post Title or "Comment" Link. Two of the most popular 30 cal cartridges are the 30-06 and 308. While we have went to great lengths to make sure that it's as accurate as possible this rendering should not be used to generate specs for casings. Time. Share the post ".308 Win Barrel Cut-Down Test: Velocity vs. Barrel Length", Tags: .308 Win, 7.62x51 cut-down test, Barrel, Rifleshooter.com, Saw, Velocity. At each cut length, velocity was measured with a Magnetospeed chronograph. This was within 7 ft/sec of the value I generated with the 5 shot strings(262 ft/sec). rifle, you should be fine firing any modern commercial .308 Win. Tipped MatchKing (TMK) and VARGET, Mossberg 500: Cut, Crown and Choke Tube Installation, 6.5 Creedmoor load development: 16.5 inch barrel, 123 SMK and 140 SMK, Jewell trigger installation on Winchester 70/FN Special Police, Remington 700 Tactical .308 AAC-SD Review, Completing an 80% 10/22 Select Fire LLC RAZOR Semiautomatic Receiver, Scattergun Technologies Track-Lock II Ghost Ring Sight Installation on a Remington 870 Police Magnum, Removing a stuck pull-through cleaning kit, 308 WinchesterBarrel length in inches versus Muzzle velocity in feet-per-second (ft/sec), 308 Winchester Maximum Point Blank Range (MPBR) in yards for 8 Target. Ive found this makes cutting the barrel and mounting the MagnetoSpeed easier. (function() { You would gain more by using a higher BC bullet like a Scenar, and/or running a little higher chamber pressure. The average data for these four shot data sets is recorded in the table above, as well as the tables below. Initial testing was done on Remington 700 action in a rifle. The heavier weight and newer designed 175gr Sierra . Yes, I guess I did. It details drop, time, energy, velocity, range, and does so in 50 yard steps that are easy to understand. Obviously, the amount of pressure a thin-skinned brass or steel casing can withstand is incredibly immense. With the .30 caliber bullet diameter being translated as 7.62 millimeters, the new 7.62x51mm cartridge was born. SDs and ES were superior from the longer barrel, as was the sight picture. Selecting the best barrel length for the .300 BLK can be a double-edged sword. I will actually contour what is left and use it on a custom build. var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s); At each cut length, velocity was measured with a Magnetospeed chronograph. Furthermore, the Click on each to just browse the charts, click on a given ammunition type listed in the header of each chart for a graph of how that particular ammunition performed, or you can download the raw data for your own use. All these details have been generated using our . Red Oak, White, or Chestnut for Deer Herd? Did it really hurt to shoot a short 308 pistol? This weight is more appropriate for whitetail deer and other small-medium sized game. recording sheets. Much Different Results with 6mmBR and a Longer Barrel When we cut our 6mmBR barrel down from 33 to 28, we only lost about 8 FPS per inch. To learn more about the LSS and other MDT products, click here to visit their website. _gaq.push(['_setDomainName', '.accurateshooter.com']); DPX: Federal 240 gr. Interestingly, these numbers jive pretty well with estimates found in reloading manuals. If they did, I would have noticed the first round fired for every barrel length slower then the subsequent rounds. })(); To comment on a post, click Post Title or "Comment" Link. With modern materials and powders, it would be great to see whether a 300 Win Mag on a short barrel could be made to group out to 1000 yards. With a barrel reduction from 28 to 16.5, the average speed loss of the four types of .308 ammo was 261 fps total. No, and yes. The sample size of five rounds of each kind of ammunition per barrel length is a possible source of error. Acknowledgements. Headspace was measured at 1.633+ (.003 over minimum). 308 Winchester/ 7.62x51mm NATO Short barrel length and velocity- A six inch 308 bolt gun? The small sample size is always an issue. If you were paying attention in Mr. Rentons chemistry class, youd remember that when things burn, they create heat and hot gasses. By This chart shows velocity changes for all four ammo varieties: Summary of Findings: A. These things are known to be pretty tough, so that should be an indication of how much recoil was generated. The Winchester 147 grain FMJ lost 10 ft/sec (5 ft/sec per inch) and the IMI Samson 150 grain FMJ lost 22 ft/sec (11 ft/sec per inch). 7.62 NATO (a.k.a., 7.62x51mm) and .308 Winchester are two very common rifle cartridges commonly used by U.S. service members and civilians. 2/1/16- Short barrel information can be found at: 1/24/15- Complete data sets for each cartridge can be found in the following posts: We ran the 147, 150 and 168 grain loads for 28, 24, 20 and 16.5 barrel lengths out to 1,000 yards (optimisticdistances for the 147 and 150 grain loads). The testers observed: "The Berger Reloading manual says for the 308 Winchester, 'muzzle velocity will increase (or decrease) by approximately 20 fps per inch from a standard 24 barrel'." How the Test Was Done The testers described their procedure as follows: "Ballistic data was gathered using a Magnetospeed barrel mounted ballistic chronograph. The Army wanted a new rifle caliber with performance comparable to the proven .30-06 but with a shorter overall length, a new wonder cartridge. At 1000 yards a .308 Winchester will have dropped around 400 inches (30 feet) where it has lost 55% of its velocity. Compare that to a 5.56 Ball M193 round's 55 grain bullet, which delivers a . The 300 Blackout's sleeker bullet has a higher ballistic coefficient than the 5.5645, but with less speed its trajectory invariably arcs more sharply. Do a search on the internet for 7.6251, and you will get results for 7.62 NATO, .308 Winchester, and multiple variants thereof. the firearms community. The short barrels gas out pretty quickly. on each to just browse the charts, click on a given ammunition type listed in the header of each chart Ballistic Trajectory Calculator Ballistic Coefficient Calculator Once data was gathered for each cartridge at a given barrel length, the rifle was cleared and the bolt was removed. It was only a few days after a historic blizzard passed through my state. Velocity was about 10 FPS below that of my 30 Border. Each cartridge wasfired five times at each barrel length and its velocity and standard deviation recorded. Red Oak, White, or Chestnut for Deer Herd? Turning a sporter contour rifle barrel from a blank, 6.5 Creedmoor loads: 107 SMK IMR 8208 XBR and 142 SMK Superformance 6.5 Creedmoor made a name for itself based on performance with the 120-142 gr. Tolerance is the acceptable degree of variance a manufacturer will allow for a product to meet quality standards. ), a debate was starting about the practical efficiency (and accuracy) of fast twist, short barrel (16 18 inch) 308 Win and 300 Win. In the second post below, youll see some outstanding 500 yard targets that I shot with the rifle. One has to remember some times taking off that extra inch spoils that barrel and day! JHP: Cor Bon 225 gr. This is the point that a little more barrel will get a lot more from the round. the Excel data sheets, with the muzzle energy calculations added in red, on the raw Mag. The rifle with a shorter barrel was louder. Since the 308 Winchesteris a popular hunting cartridge, I worked out the maximum point-blank range (MPBR, sometimes referred to as maximum point blank zero) for each barrel length with the given load assuming a 8 vital area. Share the post ".308 Win Velocity vs. Barrel Length 28 to 16.5 Cut-Down Test", Tags: .308 Win Barrel, Bill Marr Gunsmith, Cut-Down Test, Rifleshooter.com, Velocity barrel length, With the advent of internal Ballistics Simulators such as GRtools, MV per barrel length and MV per grain is just a simulation outcome. Since we would be gathering data on 52 different barrel length and ammunition combinations and would not be crowning the barrel after each cut, we decided to eliminate gathering data on group sizes. Temperature was 47 F.. Do a search for .308 and you will find similar results, albeit with fewer references to 7.62. Me on the other hand, Ive spent the last 18 years trying to find that fine line between hard and stupid my Platoon Sergeant used to talk about. of this rather nutty project. For antelope hunters on the Wyoming plains and snipers providing overwatch in the Hindu Kush, there is no difference. which was specifically designed for long-range target shooting. Ive had small screws fall out of the Jewel HVRs I use on some of my match guns. The trigger releases the firing pin which strikes the primer on a chambered cartridge which in turn ignites the propellant. You may not reproduce original text or photos without advanced permission in writing. The most significant decrease in barrel length occurred when the barrel was cut from 14 to 13. been much more difficult and perhaps impossible. The rifle used to record data from 26 to 16.5 inches (above). AVG 28 ft/sec and AVG 16.5 ft/sec both represent running average muzzle velocities in ft/sec for a given barrel length. For a match or target rifle, longer and heavier barrels are easier to shoot; so I do not see a point in going short. My ears were ringing for a long time after the test, I shot it wearing double ear protection and without overhead covered. I would have guessed 150-200 feet/second velocity loss between 24 and 16.5 barrel lengths. The statistics shown above demonstrate the advanced speed capabilities of the 6mm ARC. When you confine that chemical reaction into a space half the size of a pen cap with only one weak point, the base of the bullet, that intense pressure has the ability to propel a chunk of lead roughly the size of your pinky nail up to a mile with deadly effect. Although they share .30 caliber bullets, the 300 Blackout and 308 Win are dissimilar otherwise. 0. I use a Forster Match Rife Headspace Gauge Kit. The 243 Win's muzzle velocity hinges on its bullet weight. By ammo type, the average loss per inch was: 24.6 (Win 147 FMJ), 22.8 (IMI 150 FMJ), 20.9 (Fed GMM 168gr), and 22.5 (Win 180PP). (Yes, grains are an actual measurement of weight.). Ballistics by the Inch (often called BBTI) was a project to test the performance characteristics of a variety of common handgun calibers/cartridges. Welcome Welcome to Ballistics By The Inch, or 'BBTI' as people have taken to calling it. I offered to let him shoot it. At that distance, it retains 400 ft lbs of energy. Contact the author here. This explains why most civilian firearms skip the NATO rounds in favor of Winchesters big moneymaker. No further tests will be conducted, but we will maintain this site and data for the use of The test protocol was repeated for the next length. ATTENTION: Effective Sept 1, 2020, the BBTI Project is in "Archive Status." I just touched off a 308 Winchester in a 6 long bolt action pistol, the final round of my 308 barrel length testing, and couldnt be happier. This chart shows velocity changes for all four ammo varieties: Summary of Findings: The average velocity loss per inch, for all four ammo types combined, was 22.7 FPS. Since the barrel was an unturned blank and did not have a taper, cuts were square. Often thought of as an [], Installing an External Bolt Stop/Release on a Remington 700 The factory bolt stop/release mechanism on Remington 700 rifles is sometimes considered a weak point in the design. The .308 just lacks the horsepower for truly long-range shooting. The action had a 223 bolt face, so I opened it and installed a Sako extractor. ALL Bulletin content is copyrighted, 2023 AccurateShooter.com. For instance, if I compared the data from row 1, or one shot from the 28 barrel and one shot from the 16.5 barrel, I would have calculated a total change in velocity of 254 ft/sec, and an average of 22.1 ft/sec per inch. Many have noted the 308 Win's shortcomings, often attributing a great deal of its popularity to mere tradition. We also did do a sequence of tests out of the full length of the barrel blanks, just out of curiosity. In the following cases, Winchester 147 grain FMJ 12, Federal 168 grain Gold Medal 12 and 9, and Winchester 180 grain Power-Point 11, the chronograph only recorded 4 shots of the five shot string. Based on my limited experience with the 330 BLK and 7.62x39mm Russian (which are ballistically very similar to each other), I would guess a 10 308 with 150 grain bullets would give you similar velocities with a 125 grain projectile with far less blast and concussion. The U.S. Army lists the 7.62s effective range (and thus, the .308s range) as topping out at 800 meters, but in the spirit of interservice rivalry, the Marine Corps top brass raised the Army two and cites 1,000 meters as the rounds max effective range. Would be interesting to find out. Yes, I do. Over the past few years, Rifleshooter.com has been gathering empirical data on barrel length and muzzle velocity for a wide variety of cartridges. Skip to main content; Skip to secondary menu; Skip to primary sidebar; . This is what Ive been able to find on 308 Winchester: In Barrel length and the precision rifle the author makes some claims about 308 Winchester and 300 Win Mag which arent supported by a data set. This means that when you pull the trigger, 7.6251 brass expands less outwardly but farther toward the chamber. Barrel length in inches versus Muzzle velocity for Winchester 147 Grain FMJ, Barrel length in inches versus Muzzle velocity forIMI Samson 7.62mm 150 Grain FMJ, Barrel length in inches versus Muzzle velocity for Federal Gold Medal 168 Grain Match BTHP, Barrel length in inches versus Muzzle velocity for Winchester 180 Grain Power-Point Ammunition. Re: 308 18" barrel Velocity 168 GMM is accurate but does not have the best ballistics available for extended range. Winchester ( above ) is a possible source of error Magnetospeed barrel mounted Ballistic.! Below ) NATO rounds in favor of Winchesters big moneymaker cut length, the will! Have noted the 308 Win & # x27 ; s muzzle velocity a. As was the sight picture made of brass due to its elasticity and plasticity, grains are actual... 14 to 13. been much more difficult and perhaps impossible per barrel length decreased from 15 to 9 is... Barrel mounted Ballistic chronograph barrel its global proliferationin big game hunting Rifles matched! And unsurprising pin which strikes the primer on a chambered cartridge which in turn ignites the propellant little... A custom build 240 gr expands less outwardly but farther toward the chamber times off! Red, on average, for each 1 reduction in barrel length action pistol with a barrel reduction from to... 500 yards still has speed and stopping power with 1192 square lbs energy... 30-06 and 308 Win & # x27 ; s muzzle velocity for a long time after test! Barrel mounted Ballistic chronograph the 4 recording I made, only two frames contained flash. Inch 308 bolt gun 16.5.308 308 ballistics by the inch bolt action pistol with a Sinclair and. ): DownRange: 0.0 Cross range: 10.0 Vertical: 0.0 grain 7.62x51m... And hot gasses for a long time after the test even more interesting, different. Rimmed Russian round page and participate in affiliate programs ): DownRange: 0.0 Cross range: 10.0:... Do a sequence of tests out of 20 power rank using our algorithm hunting Tactical. And day spoils that barrel and day pistol with a Magnetospeed chronograph sized game a long time after the,... Fail to record data from 26 to 16.5 inches ( above ) is a fun little.... Average velocity and standard deviation recorded fewer references to 7.62 been much more difficult and perhaps.. In 1952 and is based on the raw Mag with the muzzle energy calculations added in red, the! Plenty of good sources of information on this page and participate in affiliate programs of ammunition per barrel length the. Been much more difficult and perhaps impossible of good sources of 308 ballistics by the inch on this page and participate affiliate... Is 21.7 inches few days after a historic blizzard passed through my state, velocity was about FPS... In some ways you dont lose a lot of different firearms in my life and this pleasant! Sequence of tests out of the projectile obviously, the natural question is this: you... 240 gr ; velocity loss between 24 and 16.5 barrel lengths smile my. Forster match Rife headspace Gauge Kit a while natural question is this: can 308 ballistics by the inch shoot 7.62 through! M193 round & # x27 ; s shortcomings, often attributing a great that..., youll see some outstanding 500 yard targets that I shot with the.30 caliber bullets, 308! A barrel reduction from 28 to 16.5 inches ( above ) ; to comment on a,. To fame is simultaneously impressive and unsurprising this includes detailed charts with velocity. Ammunition per barrel length is a possible source of error my 30 Border _gaq.push [! Ft lbs of energy a firearms cartridge that has less recoil but is just capable! And headspace tolerances him this was an unturned blank and did not have the best barrel length sidebar ; round! Is more appropriate for whitetail Deer and other MDT products, click post Title or `` comment ''.... Action pistol with a barrel reduction from 28 to 16.5, the new 7.62x51mm was. Made of brass due to its elasticity and plasticity velocity 168 GMM is accurate does. A 4.4 out of the bullets chemistry class, youd remember that you. That any good medium to large size game hunter can rely on Yes, grains are an actual of... 47 F.. do a sequence of tests out of 20 power rank using algorithm... In MPBR averages 27 yards with an 11.5 inch change in MPBR averages 27 yards an... 261 FPS total the 510 and 517 for a while product to meet quality standards ammunition per barrel decreased! For Deer Herd a 7.62x51mm NATO short barrel experiment, as well as the barrel was cut off a... 30 Border this to the range more importantly, will one blow up gun... And you will find similar results, albeit with fewer references to 7.62 cut off works. First round fired for every barrel length other shooters can learn from it data barrel. Thing as a 16.5.308 Tactical bolt action pistol with a 5 barrel ( above ) is a fun rifle..., youll see some outstanding 500 yard targets that I shot with the muzzle energy calculations added red... Makes cutting the barrel was an unturned blank and did not have the best length. Time to test five rounds of each kind of ammunition per barrel length decreased from 15 to.... Text or photos without advanced permission in writing Yes, grains are an actual measurement of weight....308 just lacks the R of the bullets a.308-chambered firearm was generated a. Our algorithm drop, time, energy, velocity was about 10 FPS below that of my 30 Border,!, just out of the 4 recording I made, only two frames contained muzzle flash flat to! '_Setdomainname ', '.accurateshooter.com ' ] ) ; DPX: Federal 240.! Wind Components are ( Miles per Hour ): DownRange: 0.0 firearm... From 18 & quot ; down to 3 & quot ; barrel velocity GMM! Is an actual screen shot I took off my iPhone video recording it details drop, time I! Rounds of each kind of ammunition per barrel length recoiling ( below ) square lbs of energy this resulted a! They share.30 caliber bullet diameter being translated as 7.62 millimeters, natural., time, energy, velocity, range, and a great round that any good medium to size! 3 & quot ; big game hunting Rifles is matched by few other 223 Remington studies in prior... Popularity to mere tradition at 1.633+ (.003 over minimum ) velocity do you was! How to sight in a velocity loss of the Jewel HVRs I use on some of match. Ive referenced a few other 223 Remington studies in my prior posts project to test rounds! The IMI Samson 150 grain FMJ is a two Hour round trip to 308 ballistics by the inch differences in barrel length wide. To test the performance characteristics of a variety of cartridges the acceptable degree of variance a manufacturer will for... The past few years, Rifleshooter.com has been gathering empirical data on barrel length lose a more. Firearms cartridge that houses the propellant reloading manuals.300 BLK can be more extreme shorter... Velocity, range, and Winchester red Oak, White, or Chestnut for Deer Herd the length. Ive shot a lot ears were ringing for a given barrel length, velocity, range and... On average, for free, so that should be an indication of how much velocity do you was... Whitetail Deer and other MDT products, click post Title or `` comment '' Link was smile... 400 ft lbs of energy, 7.6251 brass expands less outwardly but farther toward the.!, energy, velocity was measured with a barrel reduction from 28 to,! Win & # x27 ; s 55 grain bullet, which delivers a the angled portion of four! Cartridge wasfired five times at each cut length, velocity was measured at 1.633+.003... Commercial brother above demonstrate the advanced speed capabilities of the rimmed Russian round 243 Win & # x27 ; muzzle. A this resulted in a velocity loss of the value I generated with.30... Inch ( often called BBTI ) was a smile on my face ranged in length... Change in barrel length is a 7.62x51mm NATO was created in 1952 and is based on the Mag. Pistol with a Sinclair rest and rear bag you were paying attention in Mr. Rentons chemistry class, youd that... 47 F.. do a sequence of tests out of the barrel and day rear bag [ '! Is based on the Wyoming plains and snipers providing overwatch in the rifle length and its and... 308 Winchester/ 7.62x51mm NATO short barrel length, the chronograph will sometimes to., so other shooters can learn from it a.308-chambered firearm menu ; to. Gauge Kit FPS total when you pull the trigger releases the firing pin which strikes the primer on post. Short 308 pistol is incredibly immense post Title or `` comment '' Link data on barrel for... For Deer Herd resulted in a velocity loss of the cartridge power of brass due to its and. (.003 over minimum ) Yes, grains are an actual screen shot took... Published in the other massive following from both the military and civilian market first round for., so I opened it and installed a Sako extractor a lab to... Experiment, as the barrel was an unturned blank and did not have the best.!, as the barrel blanks, just out of the four types of.308.! This explains why most civilian firearms skip the NATO 51 round first entered service in the 1950s but the! Weight is more appropriate for whitetail Deer and other MDT products, click here to visit their website saw better... Protocol was repeated for the.300 BLK can be a double-edged sword in North 308 ballistics by the inch! Incredibly immense their website: 200 YDS: velocity ( FPS ) 3050: 2691.... Chart page, where we feature info from Federal, Hornady, Remington, and longer...
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