Nosler Bulk Rifle Brass .300 AAC Blackout 250ct. Nosler bulk brass is manufactured from the same materials and to the same tolerances as Nosler's prepped boxed brass but rather than being prepped and weight sorted Nosler Bulk brass is bagged raw in 250ct. bags to provide you with the best raw materials for creating your perfect load. Brass should be full-length sized and trimmed to length before loading. Specifications for Nosler Bulk Rifle Brass .300 AAC Blackout: Manufacturer: Nosler Caliber: .300 AAC Blackout Brass Quantity: 250 Piece Country of Origin: USA Package Contents: Nosler Bulk Rifle Brass .300 AAC Blackout Nosler 45124: Bulk Rifle Brass .300 AAC Blackout 250ct