With he new sierra that could really make a big difference. I love it. At 16″, a velocity of 2488 feet/second was recorded, a reduction 338 feet/second. 223 Remington/5.56mm NATO Barrel length versus Velocity- Short Barrels- 6 to 14 inches. 0. The barrel did heat up during firing. If you’ve never slugged a bore (pushed a soft lead bullet through a barrel) you should, you would be surprised by the variations you can detect in the barrel. AR15.Com reserves the right to overwrite or replace any affiliate, commercial, or monetizable links, posted by users, with our own. I reload. Using a new, factory take off Remington sporter contour barrel, data will be collected for 80 and 100-grain factory ammunition in 2″ increments and the results recorded. Kel-Tec RDB Survival Review: A Better Bang Stick? Add to Favorites Compare. April 19, 2016 So while more reliable results will be obtained with a larger sample size, the data generated from a smaller sample is still of some use (provided it doesn’t contain an outlier- which is why I don’t know of anyone using data from single shots). Just looked at the new CDNN catalog. Sorry, your blog cannot share posts by email. Neither The High Road nor any of its directors, members, managers, employees, agents, vendors, or suppliers will be liable for any direct, indirect, general, bodily injury, compensatory, special, punitive, consequential, or incidental damages including, without limitation, lost profits or revenues, costs of replacement goods, loss or damage to data arising out of the use or inability to use this forum or any services associated with this forum, or damages from the use of or reliance on the information present on this forum, even if you have been advised of the possibility of such damages. Typically, I cut straight or heavy contour barrels. Review: Mossberg 590 Shockwave vs. the Remington Model 870 TAC-14, Colorado Shooting Sports AK Lightning Bolt and AK Lightning Lever Review, USMC M40A5 Build-Part 2: Lug slotting the receiver, AR-180 Magazines: Modifying AR-15/M16 M4 magazines to fit an AR-180, Tactical Shotgun Build: Back Boring a Barrel and Lengthening a Forcing Cone to Increase Performance, Defiance Machine Deviant Receiver: Custom Remington 700 style action, External Remington 700 bolt stop- no step cut installation- method 2, Quick rifle bedding tip: Easy removal of bedding material from pillars, BAT Machine’s Model VR 2-Lug Short Action Repeater: A Remington 700 Size Action, How to cut and crown a rifle barrel and install a brake, Jewell trigger installation on Winchester 70/FN Special Police, Building a Custom Remington 700 .308 Tactical Rifle, Fixing a Custom 260 Remington Bolt Action Rifle, 308 Winchester/ 7.62x51mm NATO Comparison of velocity dataRifleshooter.com. “AVG change ft/sec” shows the difference between the running averages of the 28″ and 16.5″ barrels. Because of my background, I am very cautious with the discussion of my findings. Even if I had crowned the barrel at a given length, I think any accuracy assumptions wouldn’t be particularly leading when you factor in changes in barrel harmonics, barrel construction and the shooter’s ability. http://www.savagearms.com/firearms/models/, http://www.tikka.fi/t3models.php?varmint_showdata#pagedown, http://www.howa1500.com/category/806-Howa_1500_Rifles_22250_Remington.aspx. Recoil is such a subjective thing. That bolt rifle will do extremely long distance shots with relative ease...amazing in light of the fact that it is nothing more than a Ruger American Predator series costing slightly over $350. Based on the ubiquitous 308 Winchester, the 243 Winchester has developed a strong following among rifleman. Subscribe to our monthly Newsletter to receive firearm news, product discounts from your favorite Industry Partners, and more. I found this on Facebook, in regards to the 6.5 Creedmoor barrel length experiment,“I too love the 142 SMK. 6.5 Creedmoor- Effect of Barrel Length on Velocity: Cutting up a Creedmoor! per page.243 Winchester 20" Barrel, Rifle Length, Heavy Contour . Show. At 16″, velocity was 2806 feet/second, a reduction of 317 feet/second. Post was not sent - check your email addresses! A quick note on range conditions. They have just what you are looking for in a Howa. 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. I haven’t encountered any magazine related problems with it in various different firearms. Caliber: 243 Win Barrel Length: 20” Twist: 1-9 Thread: ⅝ x 24 Gas Tube: Rifle Length Barrel Diameter: 30mm /1.18” Barrel Weight: 51.5 oz Barrel Diameter with Gas Block: 1.6” **Due to the weight and diameter of our barrels, all Dracos barrels are in compliance with Maryland's "Heavy Barrel" law. I contribute this to the differences in barrel and headspace tolerances. However, take a look at this from my 308 Winchester post, and how the results change with sample size: Since muzzle velocity is dependent on pressure, temperature and volume, I attempted to control as many variables as possible given my setting and equipment. However, testing indicates it may not be as much as initially thought. B2-L004-C000. This was decision was made based on the very thin diameter of the barrel. Barrel length, Barrel length and velocity, Cartridge Selection By using the same barrel, I controlled for bore size, chamber, and headspace- all of which will impact velocity. It does have an expensive Vortex HST 6-24 scope on it, and I'm currently working up loads to get to 1000 yards...something I've never accomplished at this point. If you don't mind me asking, what is your main reason/goal to go for a .243 AR? 1/10 is ok for 87gr stuff but the long 117gr type pills really like something faster, around 1/8. By firing the cartridges as soon as they were chambered, I attempted to reduce the effect of the hot chamber on muzzle velocity. Comparing the data from the 30 shot strings (28″ 2824 and 16.5″ 2555) to the 5 shot strings (28″ 2823 and 16.5″ 2561) I found a loss of 269 ft/sec (23.4 ft/sec per inch) as the barrel was cut. Besides the time, I haven’t noticed any burrs (real or imagined) left by the saw affecting the velocity of the bullets. The overbore 243 Winchester with a fairly thin barrel profile, would heat up much more than than other barrel and ammunition combinations I have worked with in the past. The 243 Winchester’s 6mm (.243″) bullet offers reduced recoil and the ability to use lighter, faster bullets for varmints and small game, while heavier, 100 grain loads can be used to harvest deer. Choice of calibers. On the up side, the low recoil impulse, versatility as a varmint or big game cartridge, and readily available ammunition result in it’s popularity. Beyond hunting use, the 243 Winchester has adopted a following in competitive rifle circuits, where the fast, 6mm bullet offers low recoil, flat trajectory and match winning performance. Add to Cart. I'd look at one of the 6.5's over a .243. barrel, might as well get 2 or 3 if you plan to shoot it much. The “shot” column represents the shot number in the respective string. Further, I would challenge you to find a more similar sets of empirical data that are shared for free with the public. A great example of somebody with skill at one thing (guns) but novice at another (experimentation, measurement, statistics) botching the whole thing because of weaknesses outside his area of expertise. If they did, I would have noticed the first round fired for every barrel length slower then the subsequent rounds. I think cutting the same barrel is preferable over comparing different barrels of different lengths. From a statistical standpoint, the article is bunk. He should have consulted somebody. All content Copyright 1998-2018 Rifleshooter.com, FTC disclosure: some links on this site are monetized. I have a 7mm08 barrel from them. For more information about the MDT HS3, visit MDT’s website here. The 6.5 Creedmoor balances the excellent external ballistics of .264″ diameter bullets […]. If I wanted to expand this to a 10 shot sample,  I would simply look at row “10” and find a total change of 265 ft/sec and average loss of 23.0 ft/sec per inch of barrel. Before we get to the good stuff, please take the time to review the disclaimer below: The contents of Rifleshooter.com are produced for informational purposes only and should be performed by competent gunsmiths only. ^ creedmore will also allow you to run a longer OAL when using the long bullets 105-115gr. i'm not going ... when looking at case and barrel designs. Good Luck. If you like this post, subscribe to Rifleshooter.com on the top right side of the page. I did in the 223 and 300 Win Mag posts, and was shocked with the performance of a saw-cut crown. From hunters and military members, to competition shooters and general firearm enthusiasts, we welcome anyone who values and respects the way of the firearm. It works great with the 243 Winchester. I would suggest rereading what I wrote as it was presented. [Last Edit: 1/4/2017 10:11:57 AM EST by stooxie], [Last Edit: 1/7/2017 2:05:08 PM EST by ARTNC10], [Last Edit: 1/7/2017 2:17:30 PM EST by borderpatrol]. DPMS made one at some point I thought. Savage 12 LR Precision Target Series,Bolt Action,.243 Winchester,26" Ultra-Heavy Barrel, 3+1 Rounds Buyer's Club $1,016.49 Non-Member $1,069.99 5 out of 5 star rating (1 reviews ) obviously barrel life is going to be even worse but thats not really a major deciding factor. I selected two different factory ammunition offerings for this experiment, Remington 80 grain Core-Lokt PSP and Winchester 100 grain Power-Point. [ARCHIVED THREAD] - Like to build a 243 Win - who makes barrels. In this post, a continuation of Rifleshooter.com’s series on barrel length and velocity, we will gather empirical data on the effect of barrel length on velocity for the 243 Winchester. However, in an AR platform I didn't find it to do much more than the 20" .308. I own a Howa 1500 in .308. Something on the cheap side, and readily available would be best. It is a solid value for the money.

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