Just last week they asked for bids to manufacture brass(poly or poly hybrid cases).
Lightweight Intermediate Caliber Cartridges (LICCs)
Load and deliver mature test sample ammunition of 264 USA and 277 USA cartridges with lightweight (threshold); polymer (objective) cartridge cases with Sierra HPBT "MatchKing" projectiles.
Cartridges will function in modified, purpose-built AR-10 rifles and magazines in the semi-automatic and fully automatic modes of fire with and without the use of a muzzle-mounted signature suppressor.
Accuracy: 1.5 MOA (threshold); 1.0 MOA (objective) to 600 m (threshold); 800 m (objective).
Cartridges will function in modified, purpose-built AR-10 rifles and magazines in the semi-automatic and fully automatic modes of fire with and without the use of a muzzle-mounted signature suppressor.
It is basically Murray's 7mmUIAC but, in 6.5 or .277 caliber. Based on the 6.5 Carcano. I have 2 Nextgen rifles chambered in 6.5x45 and 6.8x45 wildcats based on the Carcano. The cartridges feed perfectly from 308 Pmags. They run apx 200 -250fps faster than the Grendel and 6.8.
http://7x46mmuiac.com/7x46mm_Cartridge.html
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