Product Description Caliber: 300 BlackoutBullet Type: Full Metal JacketBullet Weight: 220 grRounds Per Box: 50Boxes Per Case: 10Hazair: Yes Hyperion Munitions , Hyperion Hmbx300blk22050 300blk 220gr Fmj 50/10 at United States Association of Gun Owners $423.97 Buy Now Check Price on Amazon Check Price on eBay