Remington Premier Long Range ammunition in .300 Remington Ultra Magnum (brand part no. R21347) loads a 190-grain Speer Impact bullet built to bring surgical precision and bone-crushing performance to the farthest reaches a hunter can shoot. Remington calls it its deadliest big-game ammunition yet, built around a chemically bonded jacket and core designed to stop separation and drive maximum retained energy into the target. The boat-tail bullet and rear-adjusted center of gravity assist truer flight and long-range accuracy, while the Slipstream polymer tip delivers a high ballistic coefficient for a flat trajectory and helps initiate expansion across a wide range of impact velocities. Premier-grade primers and propellants round out a load matched for performance across a spectrum of environmental conditions. For .300 RUM hunters who need one bullet that performs at any range, this rifle ammunition is built for that job.

Key Specifications

• The chambering is .300 Remington Ultra Magnum, a flat-shooting magnum built for long-range big game.
• The bullet weighs 190 grains, a heavy weight matched to the cartridge’s magnum case capacity.
• The bullet is a Speer Impact, a chemically bonded jacket-and-core design with a boat-tail profile.
• The bonded body stops jacket-core separation, imparting maximum retained energy and weight into the target.
• The Slipstream polymer tip delivers a high ballistic coefficient and helps initiate expansion across a wide range of velocities.
• The ballistic coefficient is .596, contributing to a flat trajectory at extended range.
• Listed muzzle velocity is 3,130 fps, generating significant energy downrange.
• The case material is brass, giving reliable extraction and standard reloading compatibility.
• Cost runs about $4.30 per round, in line with premium bonded long-range ammunition.
• Each box holds 20 rounds, enough to confirm zero and still hunt the season.

Frequently Asked Questions

What does the Slipstream tip do? It gives the bullet a high ballistic coefficient for a flat trajectory and helps initiate expansion consistently across a wide range of impact velocities.

Why does bonded construction matter for long-range hunting? A bonded jacket and core resist separation on impact, so the bullet retains more of its weight and energy however far it has traveled.

Buy Remington Premier .300 RUM 190gr Speer Impact

Remington built Speer Impact to be its deadliest big-game ammunition yet, and .300 RUM gives it the case capacity to prove it. Order from our Lubbock, Texas gun shop and it ships fast to your door.