Now this is cool. Look at the size of these things and they sound like they will give the 7.62 x 39mm a run for it’s money. The Military Times Gear Scout gave the heads up about this one and a hat tip to them. –Matt
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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.
DESIGN OBJECTIVES
• Create a reliable compact 30-cal solution for the AR platform
• Utilize existing inventory magazines while retaining their full capacity
• Create the optimal platform for sound and flash suppressed fire
• Create compatible supersonic ammo that matches 7.62×39 ballistics
• Provide the ability to penetrate barriers with high-mass projectiles
• Provide all capabilities in a lightweight, durable, low recoiling package
Overview of the AAC 300BLK development, comparisons to other common ammunition, ballistics info, and host weapon system comparisons.
Download PDF (6.69MB)
Infosheet on the AAC 300BLK PDW 9″ AR upper, as well as the specially-developed 762-SD-N silencer.
Download PDF (766KB)
Datasheet on the 123 gr. MC 300BLK.
Download PDF (164KB)
Datasheet on the 155 gr. OTM 300BLK.
Download PDF (164KB)
Datasheet on the 220 gr. SUBSONIC OTM 300BLK.
Download PDF (164KB)
300 AAC BLACKOUT PDW Upper Manual.
Download PDF (700KB)
Link to website here.
Military Times Gear Scout article on the new caliber here.
A wildcat with a .223 case and a .308 bullet. Hmmm. Google 7.62×40, a follow-up on the .300 Whisper or .300/.221 (which, though meant to use .221 case, is usually made with a .223 case anyway). Not really innovative, isn’t it?
Here is the fun part: The people who actually use the aforementioned calibers will tell you that the broad selection of bullet weights sucks. You need a different twist to properly stabilize 200 grainers than 123 grainers.
“Ballistics of the 7.62×39” also does not seem like a recommendation, does it?
But anyway: If that caliber gets mass-produced, it will be a good thing – like for any former wildcat.
Comment by Tierlieb — Thursday, September 30, 2010 @ 1:14 AM