Doubletap Ammunition SS109 .223 Remington 62 grain Full Metal Jacket Boat Tail 20 Rounds Rifle Ammo. This is M855 made at DoubleTap in Cedar City" UT This is a great load for your .223 They use the same SS109 FMJ-BT steel penetrator projectile that our military uses. This is brand new ammunition produced at DoubleTap using all new components This is match grade ammunition This is a perfect load for consistent groups at long range. Specifications for Doubletap Ammunition .223 Remington 62 grain Full Metal Jacket Boat Tail Rifle Ammunition: Manufacturer: Doubletap Ammunition Caliber: .223 Remington Number of Rounds: 20 Bullet Type: Full Metal Jacket Boat Tail (FMJBT) Bullet Weight: 62 grain Cartridge Case Material: Brass Application: Target Package Contents: Doubletap Ammunition .223 Remington 62 grain Full Metal Jacket Boat Tail Rifle Ammunition What is Doubletap Ammunition .223 Remington 62 grain Full Metal Jacket Boat Tail Rifle Ammunition good for? The manufacturer thinks that it is best for target.