Jamison Brass and Ammunition currently has a full quality control and quality assurance laboratory in house. Our lab consists of all the gauges and tests needed to meet all caliber tolerances. We follow all specifications according to SAAMI and CIP standards. The tests and measurements we perform on our products assure that we produce the highest quality possible. Testing and analysis of our products begin from the moment we receive our raw materials all the way to the finished product as it is being packaged for sale.
Ammunition is constructed in close conjunction with American powder companies to ensure safe operating pressures and performance. Ammo assembly is handled with the same care as loading at home. Using tight tolerances on charge variation, seating, and crimping. Loaders check often to safe guard quality and consistency
The information below comes from our Gun Caliber Dictionary and is for
general reference only. It does not describe the specifications of this
particular item.
The 300 AAC Blackout (300 BLK) was developed in 2009/2010 by Advanced Armament Corporation and approved by Sporting Arms and Ammunition Institute (SAAMI) in 2011. Based on the 223 Remington case necked up to 30-caliber, it was intended for the M4 Carbine and designed to function in standard AR15/M16 magazines. Thus converting an AR to 300 AAC Blackout requires nothing more than an upper receiver group. Dimensionally it is identical to the 300 Whisper, but the 300 Blackout is fully standardized. Supersonic and subsonic ammunition is manufactured, with a 125-grain bullet producing 2215 feet per second, while the subsonic load uses a heavier bullet at much lower velocity: 220-grain bullet at 1080 fps. Military applications are obvious; as a sporting cartridge performance is similar to the 7.62x39.
—
Craig Boddington
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