Remington Core-Lokt – a reputation deserved. Hunters with a knack for filling their deer tag tend to have more than success in common. They trust their hunt to Remington Core-Lokt. For more than six decades, it has remained the leader in centerfire deer ammunition. And deservedly so.The Core-Lokt bullet design is the original controlled-expansion bullet – and one of the most effective ever developed. Its progressively tapered copper jacket is locked to a solid lead core, promoting perfectly controlled expansion and high weight retention for absolutely dependable on-game results. You’ll find its time-proven performance in both soft point and pointed soft point versions – and in a range of bullet weights for virtually every centerfire hunting caliber made.
Mfg: REMINGTON Model: R300UM1-P1
Total Rounds 20
The information below comes from our Gun Caliber Dictionary and is for
general reference only. It does not describe the specifications of this
particular item.
The 300 Remington Ultra Mag (RUM) was introduced in 1999. It is based on the 404 Jeffery case necked down, and is a full-length magnum (2.85-inch case), meaning that it requires a 375 H&H-length action to house it. The fat, unbelted case has a rebated rim of .534-inch, base diameter of .550-inch, and headspaces on the shoulder, considered more precise and thus more conducive to accuracy than belt headspacing (as belted magnums do). The 300 RUM has greater case capacity than the 300 Weatherby Magnum, thus is potentially faster. Remington's factory loads feature 150-grain bullets at 3450 feet per second, 180-grain bullets at 3250, and a 200-grain Swift A-Frame at 3025. Remington remains the primary source for factory ammunition and production rifles, but due to its accuracy and velocity the 300 RUM is becoming popular among long-range shooters and serious mountain hunters, and is chambered to an increasing number of custom and semi-custom rifles.
—
Craig Boddington
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