I wouldn't say I'm a gun nut... but I'd consider extreme enthusiast. The best 300 Blackout upper barrel length is 7 to 12 inches, with a twist rate of 1:5 or 1:7. AR15.Com reserves the right to overwrite or replace any affiliate, commercial, or monetizable links, posted by users, with our own. Beyond that, the 300 Blackout round is ideal for shooting suppressed. This barrel comes with a heavy profile and was designed to endure high rates of fire. Who's suppressor works best with these barrel lengths? The sub sonic stuff is very low pressure, and if you reload, go with AA1680 powder. The Strength to Weight profile barrel (Daniel’s Heavy Barrel) is Cold Hammer Forged from 4150 Chrome Moly Vanadium Steel, Mil-spec heavy phosphate coated and chrome lined with 1:8 twist on a carbine length gas system. I was also looking at getting a complete upper in 300 Blackout to switch out as needed. Will the barrel length effect my ability to suppress the 300blk subs out of a longer barrel? If a few inches make a big deal or not, I do not know.. load that was pushing 2100 fps. Why Subsonic 300 Blackout Needs a Pistol Length Gas System Posted by Nic Johnson on Sep 13, 2016 When entering the subsonic world you are going to be factoring in a suppressor, different ammunition types, barrel sizes, and gas systems, buffer tube weights. His would cycle subsonics unsuppressed. Here it goes down, down into my belly... thanks me too,just waiting on 762sdn too. At 10-inches, muzzle velocity hasn’t reached its peak. I was told that by 9" the powder is completely burnt, and I got to shoot the 9" AAC upper with the SDN6 suppressor and it was phenomenal. One of the other issues was magazines. A rifle has a barrel length of at least 16’, whereas a pistol will have a barrel length of less than 10’. MISC Training Course Announcements & AAR's, Former Vickers Shooting Method Regional Instructors, Pacific Northwest Training and Networking, All Other Longgun Parts, Accessories, & Magazines (EE), Handgun Parts, Accessories & Magazines (EE), If this is your first visit, be sure to 16" 300 Blackout Complete AR 15 Upper Assembly 1x8 Twist with 12 inch Rifle Length Keymod Rail Pistol Length Gas System 4150 Chrome Moly Parkerized Heavy Barrel Our Price: $479.99 Savings: $20.00 From hunters and military members, to competition shooters and general firearm enthusiasts, we welcome anyone who values and respects the way of the firearm. With a 1-7 twist rate, for instance, it means that the bullet will be spun once over 7 inches of rifling. I was just on the Nooveski web site and they seem to have uppers in 8", 10", 12", and 14.5" barrels. Ideal 300 Blackout Barrel Length for HD Pistol that will eventually be Suppressed? Depends on your use of the ..308 can. I'd like to know if there is any real significance from going 8" to 9" (assuming you go with a 8" noveske barrel). Here is a Noveske 10 in barrel w/ 9 inch LaRue rail. Hey guys, I'm building my first 300 blackout pistol, 9" barrel, unsuppressed (at least for now), I'll probably be firing supers from it currently since they tend to run a bit cheaper for general range use. Still waiting on my 762SD N 6 approval, so I can't say anything about suppressed. Scotchy, scotch, scotch. I watched c-beams glitter in the dark near the Tanhauser Gate. 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. the 300 Whisper, 300/221, 300 Fireball, 300 WTF or 300 AAC BLK .. all achieve everything its going to in 10.5" .. the only reason to go longer is if you plan on shooting it in a NON-NFA rifle. Once considered an exotic round, 300 Blackout has become a household caliber.One of the best ways to shoot 300 Blackout is suppressed. The.300 AAC Blackout (designated as the 300 BLK by the SAAMI and 300 AAC Blackout by the C.I.P. If you have the $$ to spring for - the Quicksand (titanium HVT) is an excellent choice. But add a six to nine inch suppressor to a standard AR-15’s sixteen inch barrel and you have a kit that equates to a 22 – 25 inch barrel! As something of an ammo guy, I wanted to bring the Guns.com readers an in-depth look at the brand-new Sig Sauer 300 Blackout 120-grain Short Barrel load. Subsonic bullets seem almost Hollywood movie quiet. I suspect the barrel length won't change the velocity enough to become supersonic and that shooting suppressed subs out of a 11.5 won't be noticeably different than a 9". Even supersonics suppress quite well. They Said It Could'nt Be Done...Optics 1 ECOTI Latest Fusion Available Commercially from TNVC! Caliber: 300 Blackout – WC-15 Platform Barrel Length: 8″ Round Threaded, 11.3" Round Threaded Overall Length: 25″ (8" Barrel), 28.25" (11.3" Barrel) Weight Empty: 5 lbs, 9.8 oz (8" Barrel), 6 lbs 0.2 oz (11.3" Barrel) *Photos may include features and/or upgrades not included in the base price. Right To Bear 9" .300 Blackout Pistol Length Barrel, Performance Series MSRP $190.00 . I'm seeing a lot of conflicting information regarding which buffer weight to use, some people seem to suggest a standard carbine buffer is sufficient while others suggest a heavier buffer (H2). 300 Blackout is optimized for suppressed fire with heavy bullet subsonic loads but can also be used with supersonic ammunition when extra range is needed. I have a 11.5 300blk upper on the way. I'm building my first .300 blackout... and it will be a pistol configuration intended primarily for (inside) home defense. These can handle barrels measuring up to 16 inches in length. 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