It probably worked loose after multiple shots, and somebody forgot to tighten it back up. A 1:8 twist works best with the light-weight supersonic rounds. Attaching a 6 suppressor to this barrel length results in a total length of 14 to 16, which provides optimal muzzle velocity for accurate long-range shots. Handloading the .300 AAC Blackout 300 AAC Blackout . The well-known terminal performance of that Sub-X bullet, however, does make the load an ear-friendly option for some who hunt at relatively short distances. Converting an AR-15 to fire 300 Blackout is as simple as swapping its barrel. Gun Review: Henry U.S. 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js'; Perfect for integral suppressor or just using as an SBR/pistol. Why Shoot a 300 Blackout? Both AAC and Noveske use a 1:7 twist rate, while the PWS300 BLK upper uses a 1:8 twist. Drop is predictable; wobble is not. Damn was my arm sore on the 7th day, so I rested . The muzzle velocity used for 5.56 in the chart is with a 16 barrel, but the 300 BLK is using a 10 barrel. 9 models V Seven 300 AAC Blackout Stainless Match Barrel (8) As Low As (Save Up to $10.00) $359.99 Best Rated. Here is the link. ANd then you have barrel harmonics to contend with. 300 blackout laughably entertaining. At 300, holdover is only 23.4 inches. The 115 gr (7.5 g) 6.8-round has a higher muzzle energy of 1,694 ftlb (2,297 J) due to its greater velocity, while the 125 gr (8.1 g) 300 BLK round has a muzzle energy of 1,360 ftlb (1,840 J). You can blow up your gun and sustain serious injury. Plus, the long barrel compensates for its rather laborious maneuverability. Great! By and large, the relatively rapid loss of velocity confines the 300 Blackout to near medium and close ranges. Also, always, always check your .223 magazines to ensure no 300 BLK rounds worked their way in when you loaded the mags. anyone have a good reliable source for ballistics of the most commonly commercially available and popular 300 blackout roundish relation to barrel length and rifling? Able to suppress all rifle calibers up to and including 300 Winchester Magnum, its perfectly at home on the 300 BLK rifle offering about 40% sound reduction. Save my name, email, and website in this browser for the next time I comment. 4. WebThe 300-Blackout is a lower-power 30-caliber cartridge. That number comes from multiple conversations with the people who designed the 300 AAC Blackout cartridge, did the initial testing, and who continue to design guns around that caliber. One of the best things about 300 BLK is that it gets complete burn in a much shorter barrel. Bullets make a similar noise, although not nearly as earth rumbling, that is very recognizable and isnt always advantageous in combat. With these details in mind, the best .300 Blackout barrel length for hunting is one that can hit long-range targets. 9 AAC 1:7 melonite barrel is the best Ive tested. A 9" barrel will allow any 300 BLK cartridge to reach optimal velocity, while an 11.5" barrel will provide a bit more accuracy and stability if you plan on shooting mostly supersonic loads. Sound travels at 1,100 fps at sea level on a standard day. BA, Rosco, WC, and others have all worked immediately without any specialty tuning. While on a 16-inch barrel, it reaches speeds of approximately 2400fps.

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