PMC Battle Pack 223 Rem 55 Gr Full Metal Jacket Boat Tail FMJBT. PMC Battle Packs are vacuum-sealed and wrapped in a high density advanced polymer sleeve. Inside of the Battle Packs ammo is packaged in regular PMC boxes so 10 boxes of 20 for a total of 200 in each 223A and 5.56X Battle Pack. Specifications for PMC 223ABP Battle Pack 223 Rem 55 Gr Full Metal Jacket Boat Tail (FMJBT): Manufacturer: PMC Ammunition Caliber: .223 Remington Number of Rounds: 200 Bullet Type: Full Metal Jacket Boat Tail (FMJBT) Bullet Weight: 55 grain Cartridge Case Material: Brass Muzzle Velocity: 3200 ft/s Muzzle Energy: 1250 ft-lbs Application: Protection Primer Style: Centerfire What is PMC 223ABP Battle Pack 223 Rem 55 Gr Full Metal Jacket Boat Tail (FMJBT) good for? The manufacturer says that it is best for protection.