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Thread: New 300 ACC Blackout
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October 4th, 2010, 09:46 PM #1
New 300 ACC Blackout
Introducing the Advanced Armament Corp. 300 AAC BLACKOUT (300BLK). This system was developed to launch 30 caliber projectiles from the AR platform without a reduction in magazine capacity and compatible with the standard bolt.
Full power 123 grain ammunition matches the ballistics of the 7.62x39mm AK, has 37% more energy than 5.56mm M855, and 9% more than 6.8 SPC TAP 110. In fact, from a 9 inch barrel, the 300BLK has more muzzle energy than 5.56mm M855 from a 16 inch barrel. When 300 BLK is used in a 16 inch barrel, it has 23% more energy than 5.56mm M855 from a 16 inch barrel - with much higher-mass projectiles for a more dramatic effect on the target. Or choose subsonic cartridges for optimal use with a sound suppressor - 220 grain Sierra OTM (open-tip match) bullets vastly outperforms a 9mm MP5-SD in penetration and long range accuracy.
Due to the high efficiency of the cartridge, less powder is used than 5.56mm, which results in a rifle that is a comfortable to shoot - even with a short barrel.
Reloading dies available from Forster products, Reamers and headspace guages available from Pacific Tool and Gauge.
Overview
300 BLACKOUT (7.62x35mm) is better because:
• Standard 5.56mm Cartridge Taper
– AR Magazines were designed to feed this taper
– Maintains Magazine capacity
– Minimizes strain on AR Bolt’s weaknesses
• Cartridge taper maintains standard resistance to bolt thrust
• Utilizes a standard AR Bolt Face, to retain Bolt Locking Lug strength
• Wide Projectile Selection
– 0.308” possibly the most popular center fire rifle bullet in history
– Wide Projectile Selection
• Proven Track Record
– Pioneering work by JD Jones with the 300 Whisper®, and others with 300 Fireball and 300-221, have proven the concept.
It looks promising other than ammo availability and cost!The original point and click interface was a Colt Peacemaker!
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