Remington 300 Rem Ultra Mag 190 Grain Impact Centerfire Rifle Ammo 20 Rounds. This Remington Ammunition features Polymer Tipped Boat Tail (PTBT) bullets that deliver strong stopping power immaculate accuracy and consistency. With premium brass cases loaded with polymer tipped boat tail (ptbt) bullets you ll deliver excellent results for target. With special offers on Ammunition and other high-quality rifle ammo from trusted brands like Remington you re sure to find the ideal cartridge for your next outdoor adventure or training session. Stock up today to save big on ammo and other top-tier tactical hunting and outdoor gear at OpticsPlanet. Specifications for Remington 300 Rem Ultra Mag 190 Grain Impact Centerfire Rifle Ammunition: Manufacturer: Remington Caliber: .300 Remington Ultra Magnum Number of Rounds: 20 Bullet Type: Polymer Tipped Boat Tail (PTBT) Bullet Weight: 190 grain Cartridge Case Material: Brass Muzzle Velocity: 3130 ft/s Muzzle Energy: 4133 ft-lbs Application: Target Primer Style: Centerfire G1 Ballistic Coefficient: 0.596 G7 Ballistic Coefficient: 0.282 Lead Free: No Package Contents: Remington 300 Rem Ultra Mag 190 Grain Impact Centerfire Rifle Ammunition What is Remington 300 Rem Ultra Mag 190 Grain Impact Centerfire Rifle Ammunition good for? The manufacturer suggests that it is best for target.Remington R21347: 300 Rem Ultra Mag 190 Grain Impact Centerfire Rifle Ammo 20 Rounds