Remington Core-Lokt 300 Rem Ultra Mag 180 Grain Core-Lokt Tipped Brass Rifle Ammo 20 Rounds. This Remington Ammunition features Core-Lokt Tipped bullets that deliver strong stopping power perfect precision and predictability. With premium brass cases packed with core-lokt tipped bullets you ll deliver perfect results for big game. With great promotions on Ammunition and other top-tier rifle ammo from trusted brands like Remington you re sure to find the best round 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 Core-Lokt 300 Rem Ultra Mag 180 Grain Core-Lokt Tipped Bras Rifle Ammunition: Manufacturer: Remington Caliber: .300 Remington Ultra Magnum Number of Rounds: 20 Bullet Type: Core-Lokt Tipped Bullet Weight: 180 grain Cartridge Case Material: Brass Application: Big Game Package Contents: Remington Core-Lokt 300 Rem Ultra Mag 180 Grain Core-Lokt Tipped Bras Rifle Ammunition What is Remington Core-Lokt 300 Rem Ultra Mag 180 Grain Core-Lokt Tipped Bras Rifle Ammunition good for? The manufacturer says that it is best for big game.Remington R29045: Core-Lokt 300 Rem Ultra Mag 180 Grain Core-Lokt Tipped Brass Rifle Ammo 20 Rounds