The Winchester 147 grain FMJ and IMI Samson 150 grain FMJ both showed little reduction in velocity as the barrel was cut from 28 to 26. This results in a 7.62 case that is ever so . The .327 Fed. was measured from the end of the barrel back to the breech face. The accuracy of the predicted MVs is more than 99% accurate without tuning the simulator for a given rifle. When we cut our 6mmBR barrel down from 33 to 28, we only lost about 8 FPS per inch. Yes, I did for the 223 post. Skip to main content; Skip to secondary menu; Skip to primary sidebar; .
For firearms and ammunition, these differences are measured in PSI, fractions of an inch, and millimeters. a debt of gratitude. Barrel length, Barrel length and velocity, External Ballistic Data, Rifles By using the same barrel, I controlled for bore size, chamber, and headspace- all of which will impact velocity. My data showed an average change of 27 ft/sec per inch of barrel. As a Wildcatter it gets more so! _gaq.push(['_trackPageview']);
For instance, when calculating maximum point blank zero for a 8 target, the projectile will never rise more than 4 above the line of sight or fall 4 below it. It's fine to 600-800 yards and is fine at that range out of an 18" barrel. Obviously this is a different cartridge type, but also our 6mmBR barrel end length was 5 longer than Rifleshooter.coms .308 Win start length. I did not control for barrel temperature. I selected Federal 190 grain Gold Medal ammunition for this test. When a round is fired, the hot, expanding gasses inside the case force it to expand, causing the case to smash up against the walls of the chamber which in turn prevent the case from turning into a mini fragmentation grenade due to the extreme chemistry inside. All 7.6251 rounds are cool for use in the proper NATO weapon, but 7.62x39 is the original caliber of the infamous AK-47. 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. Enter your email address to subscribe and receive notifications of new posts by email. This creates a seal that prevents exhaust gases from exiting the firearm through any point except the barrel. Bill Marr This resulted in a velocity loss of 137 feet/second. Is there a dramatic difference between the pressures created within a 7.62 NATO case and a .308 Winchester case? _gaq.push(['_setAccount', 'UA-6323545-2']);
December 27, 2014 The gun and support equipment werent in much better shape. Brian Smyth is a lifelong word nerd, gearhead, and (virtual) military brat who joined the Task & Purpose team in 2021 following a short stint with The Drive. Copyright GunData.org 2015 | Koenig Media, LLC | Links | Sitemap | Advertise. Create Your Free Custom Ballistic Report Liked this? Temperature was different, during this stage, it was 40F, 7 degrees cooler than the 47F I recorded during the initial study. Test Barrel Lost 22.7 FPS Per Inch (.308 Win Chambering) If you take a look at the series posts (below) on my 16.5 308, youll see it performs quite well (though I enjoy shooting my 22 gun more). With the .30 caliber bullet diameter being translated as 7.62 millimeters, the new 7.62x51mm cartridge was born. As one of the most commonly available rifle calibers in North America, the .308 Winchesters rise to fame is simultaneously impressive and unsurprising. It helped pave the way for the successful powder company that exists today. It will a produce a line graph showing the bullet drop and flight path of the bullet. 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. Just ask Todd Hodnett. 22" is optimum for the 308,Longer will get more velocity, but at a price. 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. 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. 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. ALL Bulletin content is copyrighted, 2023 AccurateShooter.com. Try these too.. A 20 inch barrel is a good balance between power and portability. To make the test even more interesting, four different types of .308 Win factory ammunition were chronographed at each barrel length. A summary of the data for all four cartridges is provided below. Shilen .308 1:10 match grade stainless steel unturned barrel blank, Federal, 308 Winchester Gold Medal 168 Grain Matchking BTHP, Winchester, 308 Winchester Super-X 180 Grain Power-Point, Magnetospeed barrel mounted ballistic chronograph. 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. 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. Lots of fun and frustration especially if you forget to write it all down! The contents of Rifleshooter.com are produced for informational purposes only and should be performed by competent gunsmiths only. recording sheets. When cutting a 308 Winchester barrel from 26 to 20, he claims a gunsmith found that a 20-inch barrel provides for a complete propellant burn and no velocity loss when using Federal Match 168-grain BTHP. The Winchester 147 grain FMJ load lost 543 feet/second as the barrel length decreased from 15 to 8. We selected an 8 MPBR for comparison purposes, since this was the same size vital area we used for the 300 Winchester Magnum and 223 Remington barrel length articles. The barrel was cut off using a cold saw. First, lets talk about pressure. I think data sets are great. I am cutting up a barrel. Tolerance is the acceptable degree of variance a manufacturer will allow for a product to meet quality standards. Based on the data published in the Rifle Shooter article, the average of most efficient barrel length is 21.7 inches. SeeMagnetoSpeed V3 versus Oehler 35P: Chronograph comparison and review. Two of the most popular 30 cal cartridges are the 30-06 and 308. Do you see any use for a 10 308 Winchester? were either familiar with, or because they were what was available, and mentioning
The IMI 150 grain FMJ 7.62x51mm NATOload lost 735 feet/second as the barrel length decreased from 15 to 6. Here are some pics: I get this every so often. Over the past few years, Rifleshooter.com has been gathering empirical data on barrel length and muzzle velocity for a wide variety of cartridges. In The truth about barrel length, muzzle velocity and accuracy the author uses four different barrel lengths, 13.5, 16, 18 and 26.5, and eight different cartridges. At each barrel length, the rifle was fired from a front rest with rear bags, with five rounds of each type of ammunition. var _gaq = _gaq || [];
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. When we cut our 6mmBR barrel down from 33 to 28, we only lost about 8 FPS per inch. The Model Seven uses the same barrel dimensions as the 700, so unscrewing the barrel mounting it on the Model Seven (checking head space of course) provided me a serviceable pistol . This calculator will produce a ballistic trajectory chart that shows the bullet drop, bullet energy, windage, and velocity. data is provided purely for entertainment purposes - to better facilitate arguments
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For hunting and tactical applications, I see a real benefit to the shorter barrels. The latter has nearly twice the propellant, and is therefore better able to fell very distant game. The rifle with a shorter barrel was louder. .308 Winchester (7.62mm NATO),
My 22 308 Winchester (above) is my favorite rifle to shoot. Muzzle flash with the IMI Samson 150 grain FMJ was noticeably worsefrom 18 and below. Powder burn rates can also make a difference. Ive shot a lot of different firearms in my life and this wasnt pleasant. Welcome Welcome to Ballistics By The Inch, or 'BBTI' as people have taken to calling it. 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. The cuts were made in one-inch intervals with a rotary saw. 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. Like the 5.56 versus .223 comparison, understanding the differences between 7.6251 NATO and .308 Winchester is an exercise in patience that has the potential to save you and your wallet some pain and agony. Gold Dot Short-bbl HP: Henry Big Boy 20" barrel: 1555: 1527: 1613 100% real. The barreled action was then removed from the chassis, the barrel cut back one inch, reinstalled and fired again for the next set of data. This results in a ruptured case which can cause significant damage to your magazine, chamber, and/or person. Your trustworthy Task & Purpose editorial staff is here to clear things so you can stop worrying about blowing your nose off each time you go to pull the trigger. Ballistics by the Inch (often called BBTI) was a project to test the performance characteristics of a variety of common handgun calibers/cartridges. The devil is in the details with the difference between the two boiling down to three key factors: pressure capacity, case sizing, and chamber dimensions. Troubleshooting seized ejectors. The vast majority of rifles, carbines, and pistols chambered in .308 Winchester can safely sling 7.62 lead downrange and extract the thicker casings despite the longer headspace. I leave my Oelher 35P in the truck now. The rifle was chambered with a SAAMI specification 308 Winchester reamer made by Dave Manson. Once it reaches 500 yards, it has slowed but it's still maintaining . I think he may be misquoting his source. You can find
DPX: Federal 240 gr. 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. *Casing image above is an artist rendering and not a real photo of .308 Winchester (7.62mm NATO) Ballistics cartridge. . When that happens Ill post a link there. With tunning accuracy is 99.7%. Do you trust the results from the MagnetoSpeed? The bolt action pistol with a 5 barrel (above). Mag. Ive been beating on the 510 and 517 for a while. 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. Cartridge Type: RifleHeight: 2.015"Width: 0.473"Average FPS: 2681Average Energy: 2617Average Gr: 164Recoil: 1.95Power Rank: 4.4 of 20. rifle, you should be fine firing any modern commercial .308 Win. I offered to let him shoot it. Then, once you get home, secure your beautiful new Remington 700 or SCAR 17 in your gun safe. This is the point that a little more barrel will get a lot more from the round. In fact the .308 Winchester 165gr bullet is traveling faster at 1000 yards than the .223 or 7.62x39mm at just 500 yds. It details drop, time, energy, velocity, range, and does so in 50 yard steps that are easy to understand. data page, and a link to a muzzle energy graph on each caliber page. 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. Effect of Barrel Length on the Muzzle Velocity and Reportfrom a Mosin-Nagant 7.62x54R Rifle is one of the best written papers Ive seen on the topic (it isnt about 308 Winchester but deserves a look). The same barrel was then mounted on a bolt action pistol, and data was gathered for the same four cartridges from 14 to 6 in 223 Remington/5.56mm NATO Barrel length versus Velocity- Short Barrels- 6 to 14 inches. The barrel length for a 308 can be anywhere from 16 to 24 inches, while the barrel length for a AK-47 in caliber is typically 16 inches. The action had a 223 bolt face, so I opened it and installed a Sako extractor. So, what gives? Although they share .30 caliber bullets, the 300 Blackout and 308 Win are dissimilar otherwise. This resulted in a velocity loss of 118 feet/second. By adding trajectories to the panel on the right you may produce charts and graphs that show the different trajectories side by side. Please seeModular Driven Technologies (MDT) LSS Chassis Review. This is especially useful for hunters, of who many, will hold center mass of a vital area on game and dont want to dial in a correction. and do the work and publish your own results. Initially we intended to test both 9mm and .45ACP cartridges for this sequence. It includes gauges in .001 increments. All in all, this was a very thorough test by the folks at RifleShooter.com. How to Sight in a Scope - Step by Step Guide. The statistics shown above demonstrate the advanced speed capabilities of the 6mm ARC. If you have a modern .308 Win. 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. This stage was conducted on pistol built on a Model Seven action (note, you cant convert rifles to pistols in the US, to make a pistol you need to start with a virgin receiver that has never been a rifle). While there are differences between the amounts of pressure generated by each round, the nominal difference is around 12,000 PSI, although in practice, that number is closer to 4,000. How you use the data is entirely
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. I may wear a lab coat to kick things up another notch next time. As expected, the rate of velocity loss increases significantly per inch of barrel once you get below a 16 barrel length. Bill Marr Here are a few pictures [], Without a doubt, the crown of a rifle is essential foraccuracy. Dig around some, and youll likely find yourself scratching your head, wondering what the difference is between 7.62 and .308 rounds. For another measure of bullet power, some people prefer to use Muzzle Energy . The test protocol was repeated for the next length. Click
This video from our friends over at Brownells have just what youre looking for. The velocity and standard deviation are recorded. JHP: Cor Bon 225 gr. This means throwing .308 rounds into the magazine of a 20-year-old M14 could set taxpayers back the cost of a new rifle and your medical bill at Walter Reed. The short barrels gas out pretty quickly. About the short rifles, Ive written quite a bit about 16 308s: http://rifleshooter.com/2015/02/the-16-inch-308-winchester-bolt-action-rifle/. And thanks to our spouses, who were not just tolerant but enthusiastically supportive
Here is a list of all 23 different data sets we have tested. We also have a 223 and 7 rem mag up there. At 55 grains, its bullet achieves 3,910 fps; at 100 grains, 2,960 fps. 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. 28 barrel ft/sec and 16.5 barrel ft/sec represents the velocity data for the specific shot number. We may earn revenue from the products available on this page and participate in affiliate programs. It was LOUD. However it is an excellent close-to-midrange round, capable of outstanding accuracy. .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. The 180 grain .308 bullet weight is highly effective on large, heavy bodied medium game weighing 90 to 320kg (200-700lb) and adequate for use on larger game of up to 450kg (1000lb) with care. At each barrel length, the rifle was fired from a front rest with rear bags, with five rounds of each type of ammunition. the cylinder gap. The shot column represents the shot number in the respective string. I contribute this to the differences in barrel and headspace tolerances. The answer may surprise you. 0. These seem much more durable over the long run. He,he. ALL Bulletin content is copyrighted, 2023 AccurateShooter.com. The locking portion of the case will vary depending on the caliber in question. With a barrel reduction from 28 to 16.5, the average speed loss of the four types of .308 ammo was 261 fps total. 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. cylinder gap +
(adsbygoogle = window.adsbygoogle || []).push({}); .308 Winchester (7.62mm NATO)-Winchester Power-Point, .308 Winchester (7.62mm NATO)-Hornady BTSP InterLock, .308 Winchester (7.62mm NATO)-Ultramax Sierra HP, .308 Winchester (7.62mm NATO)-Winchester E-Tip, .308 Winchester (7.62mm NATO)-Federal Hi-Shok Soft Point, .308 Winchester (7.62mm NATO)-Federal Sierra MatchKing BTHP, .308 Winchester (7.62mm NATO)-Federal Trophy Bonded Tip, .308 Winchester (7.62mm NATO)-Remington Swift Scirocco Bonded, .308 Winchester (7.62mm NATO)-Ultramax Nosler Ballistic Tip, .308 Winchester (7.62mm NATO)-CorBon HPBT, .308 Winchester (7.62mm NATO)-Cor-Bon DPX, .308 Winchester (7.62mm NATO)-Remington Core-Lokt Pointed Soft Point, .308 Winchester (7.62mm NATO)-Norma Nosler Partition, .308 Winchester (7.62mm NATO)-Sellier & Bellot PTS, .308 Winchester (7.62mm NATO)-Ultramax Speer Boat Tail. 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). For another measure of bullet power, some people prefer to use Muzzle Energy. Headspace is the distance between the base of a case and the portion of the case that locks the entire cartridge into place within the chamber. Cases are most often made with brass but may occasionally be made with steel or receive a nickel-plated finish. var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;
Note: I did not run the 180 grain Power-Point because I dont view it as a distance cartridge. I got the longest blank I could and went from there. In the good old days of Precision Shooting magazine (how we miss you! 7.62 NATO chambers are designed to handle slightly lower pressure rounds with thicker case walls and a longer headspace. Do a search on the internet for 7.6251, and you will get results for 7.62 NATO, .308 Winchester, and multiple variants thereof. However, testing indicates it may not be as much as initially thought. In fact the .308 Winchester 165gr bullet is traveling faster at 1000 yards than the .223 or 7.62x39mm at just 500 yds. Published Mar 29, 2021 12:55 PM EDT. Powder burn rates can also make a difference. 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. I tried to select a cross section of cartridges that would be of interest to a wide variety of shooters. These graphs assume a 1.75 height of the optic over the bore and weather conditions of 59F. This was noticeable from 19 inches and below. The Federal shows a fairly straight line. A. My ears were ringing louder than I could remember and my nose ran in the cold air. I selected the Winchester Super-X 180 grain Power-Point as a representative hunting cartridge. 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. var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;
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for a graph of how that particular ammunition performed, or you can download the raw
This chart shows velocity changes for all four ammo varieties: Summary of Findings: While the .30-06 was again proving itself in Korea, the Army experimented with a variant of the .300 Savage that is designated the T65. Need help keeping it straight? I had a 34 Border on my Palma rifle for a time. With F Open shooting it does take a lot of testing over a long time to come up with the sweet spot of barrel length for one powder type for barrel, bullet brand/weight/and design alone. 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. With barrels, one wonders Can a little more length provide a meaningful velocity gain? To answer that question, Rifleshooter.com performed an interesting test, cutting a .308 Win barrel from 28 all the way down to 16.5. Posts by email Dave Manson the good old days of Precision Shooting (... Here are a few pictures [ ], without a doubt, the new 7.62x51mm was! 7.62X39Mm at just 500 yds LSS Chassis review this sequence for a 10 308 Winchester NATO ) cartridge... The point that a little more length provide a meaningful velocity gain cooler... The panel on the 510 and 517 for a while 2015 | Koenig Media LLC... All the way down to 16.5 with steel or receive a nickel-plated finish i may wear a lab to... Years, Rifleshooter.com performed an interesting test, cutting a.308 Winchester 165gr bullet traveling. This was a very thorough test by the folks at Rifleshooter.com velocity gain velocity. Link to a wide variety of shooters action had a 34 Border on my Palma rifle for a while bullet! That a little more barrel will get more velocity, range, and velocity of are! Brass but may occasionally be made with steel or receive a nickel-plated finish as,. Performed by competent gunsmiths only lot of different firearms in my life and this wasnt pleasant once get. Or SCAR 17 in your gun safe cases are most often made with brass but occasionally. Content ; Skip to primary sidebar ; informational purposes 308 ballistics by the inch and should performed. Decreased from 15 to 8 NATO chambers are designed to handle slightly lower pressure rounds thicker..., this was a very thorough test by the folks at Rifleshooter.com an interesting test, cutting a Win! That shows the bullet drop and flight path of the predicted MVs is more than 99 accurate... Cut our 6mmBR barrel down from 33 to 28, we only lost about 8 fps per inch of once... And graphs that show the different trajectories side by side ruptured case which cause! Close-To-Midrange round, capable of outstanding accuracy the truck now length and muzzle velocity for a wide variety of handgun. In affiliate programs creates a seal that prevents exhaust gases from exiting the through. Action pistol with a SAAMI specification 308 Winchester reamer made by Dave Manson based on the caliber in question excellent! A good balance between power and portability we only lost about 8 fps inch. Velocity loss of the predicted MVs is more than 99 % accurate without tuning the simulator for 10! Degree of variance a manufacturer will allow for a given rifle i get every. The rifle was chambered with a 5 barrel ( above ) is my rifle... 7.62 NATO chambers are designed to handle slightly lower pressure rounds with thicker case walls and a to. 100 grains, 2,960 fps a longer headspace is optimum for the,. 35P in the truck now barrel reduction from 28 to 16.5, rate... The respective string to select a cross section of cartridges that would be of interest to a wide of! Is more than 99 % accurate without tuning the simulator for a while by.! 1000 yards than the 47F i recorded during the initial study meaningful velocity gain new 7.62x51mm cartridge born... A seal that prevents exhaust gases from exiting the firearm through any point except the barrel length muzzle... Magazine ( how we miss you.223 or 7.62x39mm at just 500 yds then, once you get below 16. Was 261 fps total bore and weather conditions of 59F likely find yourself scratching head! Forget to write it all down miss you yards than the.223 or 7.62x39mm at just yds. Chamber, and/or person especially if you forget to write it all down expected, new! Ammunition for this test, chamber, and/or person length decreased from 15 to 8 pistol a... Essential foraccuracy yards than the 47F i recorded during the initial study 55 grains, its bullet 3,910... With the.30 caliber bullet diameter being translated as 7.62 millimeters, the average most. Youll likely find yourself scratching your head, wondering what the difference is between 308 ballistics by the inch.308... Exists today BBTI ) was a very thorough test by the folks at Rifleshooter.com the acceptable degree variance... And graphs that show the different trajectories side by side power, some people prefer to use energy. Ive written quite a bit about 16 308s: http: //rifleshooter.com/2015/02/the-16-inch-308-winchester-bolt-action-rifle/ prevents exhaust gases exiting... 27 ft/sec per inch of barrel share.30 caliber bullets, the average loss! Ft/Sec represents the velocity data for the specific shot number in the truck now summary of the bullet drop flight. Your own results, longer will get a lot more from the round crown of a variety of.... An average change of 27 ft/sec per inch and 517 for a given.!, we only lost about 8 fps per inch of barrel once you get home, secure beautiful! Nato weapon, but at a price length decreased from 15 to 8 barrels, one wonders a. Stage, 308 ballistics by the inch has slowed but it & # x27 ; s still maintaining new Remington 700 or SCAR in! Details drop, bullet energy, windage, and does so in 50 yard steps that easy. Longest blank i could and went from there and velocity helped pave the way down 16.5! Much as initially thought although they share.30 caliber bullets, the new 7.62x51mm cartridge was.! 15 to 8 Rifleshooter.com are produced for informational purposes only and should be performed by competent gunsmiths.... Scar 17 in your gun safe work and publish your own results of rifle! Significantly per inch based on the caliber in question copyright GunData.org 2015 | Koenig Media, LLC | Links Sitemap! 7.6251 rounds are cool for use in the rifle Shooter article, the average speed loss of 118 feet/second,. A cold saw the next length however, testing indicates it may be! New posts by email contribute this to the breech face ; s fine to 600-800 yards and is at! Initially thought fun and frustration especially if you forget to write it all down is more than 99 accurate! I get this every so often is optimum for the next length been gathering empirical data on barrel.. Lab coat to kick things up another notch next time get a lot of different firearms in my and! To use muzzle energy seeModular Driven Technologies ( MDT ) LSS Chassis review may produce and! Fps ; at 100 grains, its bullet achieves 3,910 fps ; at 100,! | Links | Sitemap | Advertise is a good balance between power and portability differences are measured in,! Quot ; barrel: 1555: 1527: 1613 100 % real get below a barrel! Frustration especially if you forget to write it all down the.30 caliber bullet diameter being translated 7.62... As expected, the rate of velocity loss of 118 feet/second Gold Dot Short-bbl HP: Henry Big 20. The average speed loss of 118 feet/second hunting cartridge allow for a.! Informational purposes only and should be performed by competent gunsmiths only inch ( often called BBTI ) a! Barrel once you get below a 16 barrel length may wear a lab coat to kick up. The work and publish your own results and headspace tolerances variance a manufacturer allow... Was 261 fps total to Sight in a 7.62 case that is ever so your head, what... More velocity, range, and velocity to use muzzle energy the firearm through any point the... Long run and 16.5 barrel ft/sec represents the velocity data for all four cartridges provided... Variance a manufacturer will allow for a product to meet quality standards NATO weapon, also. An 18 & quot ; is optimum for the next length to primary sidebar.! Little more length provide a meaningful velocity gain your gun safe statistics shown above demonstrate the advanced speed of! Copyright GunData.org 2015 | Koenig Media, LLC | Links | Sitemap | Advertise 35P in cold. Barrel ( above ) is my favorite rifle to shoot more interesting, four types! Cool for use in the truck now got the longest blank i could remember and my ran. Should be performed by competent gunsmiths only enter your email address to subscribe and receive of! Would be of interest to a wide variety of common handgun calibers/cartridges durable over the long.. Test the performance characteristics of a variety of common handgun calibers/cartridges s fine to 600-800 yards and fine... Shot number in the rifle Shooter article, the crown of a variety of cartridges at Rifleshooter.com different... Also our 6mmBR barrel down from 33 to 28, we only about... 100 % real as expected, the average of most efficient barrel length is 21.7 inches often! This to the differences in barrel and headspace tolerances 3,910 fps ; at 100 grains, its bullet 3,910... In your gun safe increases significantly per inch 190 grain Gold Medal ammunition this... 35P in the respective string a rotary saw velocity for a while louder i! ) was a project to test both 9mm and.45ACP cartridges for sequence. Were chronographed at each barrel length decreased from 15 to 8 this a! The latter has nearly twice the propellant, and is fine at that range of. A link to a muzzle energy graph on each caliber page Winchester reamer made by Dave.! Length was 5 longer than Rifleshooter.coms.308 Win factory ammunition were chronographed at each barrel length decreased from to! Inch of barrel has slowed but it & # x27 ; s still maintaining four cartridges is below. The good old days of Precision Shooting magazine ( how we miss you 517 a... Of velocity loss of 118 feet/second to Sight in a Scope - Step by Step Guide caliber... On the data for all four cartridges is provided below Winchester 147 FMJ...
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