Federal Premium Vital Shok 12 Gauge 1oz TruBall Deep Penetrator Rifled Slug Centerfire Shotgun Ammo Rifled Slug Shot 5 Rounds PB127 DPRS. The high antimony content of the TruBall Deep Penetrator rifled slug gives it the power to smash through even the toughest tissue. The TruBall system locks the components together centering and pushing the lead slug out of the barrel for groups as tight as 1.4 inch at 50 yards. Specifications for Federal Premium Vital Shok 12 Gauge 1oz TruBall Deep Penetrator Rifled Slug Shotgun Ammunition: Manufacturer: Federal Gauge: 12 Number of Rounds: 5 Shell Length: 2 3/4 in Muzzle Velocity: 1350 ft/s Application: Big Game Shot Material: Lead Primer Style: Centerfire Bullet Weight: 430 grain Bullet Type: Rifled Slug Hollow Point (RSHP) Cartridge Case Material: Brass Lead Free: No Shot Size: Slug Shotgun Shot Weight: 1 oz Features of Federal Premium Vital Shok 12 Gauge 1 oz TruBall Deep Penetrator Rifled Slug Centerfire Shotgun Ammunition A plastic ball between the wad and slug increases smoothbore accuracy Capable of 1.4-inch groups at 50 yards Clean separation of components after muzzle exit Increased downrange energy Deep Penetrator slugs higher antimony lead ensures better terminal performance on hogs and bears Package Contents: Federal Premium Vital Shok 12 Gauge 1oz TruBall Deep Penetrator Rifled Slug Shotgun Ammunition What is Federal Premium Vital Shok 12 Gauge 1oz TruBall Deep Penetrator Rifled Slug Shotgun Ammunition good for? The manufacturer suggests that it is best for big game.Federal PB127 DPRS: Premium Vital Shok 12 Gauge 1oz TruBall Deep Penetrator Rifled Slug Centerfire Shotgun Ammo Rifled Slug Shot 5 Rounds