Product Overview
Remington's 300 RSAUM 165-grain PSP ammunition delivers hard-hitting, flat-shooting performance engineered for big-game hunters who demand reliable terminal expansion and deep penetration in a compact short-action package.
- 165-grain Pointed Soft Point bullet optimized for rapid, controlled expansion on impact
- 300 Remington Short Action Ultra Mag chambering for superior ballistic efficiency
- Designed for short-action rifles, reducing overall rifle weight and improving handling
- Remington's proven brass casing ensures consistent headspace and reliable feeding
- 20 rounds per box — ideal for hunting seasons and pre-season practice sessions
- PSP construction delivers reliable mushrooming across a wide range of impact velocities
Who This Is For
This load is purpose-built for big-game hunters pursuing deer, elk, black bear, and similar medium-to-large North American game at ranges from close timber shots out to several hundred yards. It's the go-to choice for shooters running a short-action rifle chambered in 300 RSAUM who want a proven, field-tested factory load with dependable terminal performance.
Specifications
| Brand | Remington |
|---|---|
| Caliber | 300 Remington Short Action Ultra Mag (300 RSAUM) |
| Bullet Weight | 165 Grains |
| Bullet Type | Pointed Soft Point (PSP) |
| Muzzle Velocity | ~3,075 fps (24" barrel) |
| Muzzle Energy | ~3,464 ft-lbs |
| Rounds Per Box | 20 |
| Casing Material | Brass |
| Primer Type | Boxer |
| Reloadable | Yes |
| Intended Use | Big-Game Hunting |
| Country of Origin | USA |
Frequently Asked Questions
What game is the 300 RSAUM 165-grain PSP best suited for?
The 165-grain PSP load is an excellent all-around big-game hunting round, ideally suited for whitetail and mule deer, pronghorn, black bear, and elk at moderate ranges. The Pointed Soft Point bullet initiates reliable expansion at a broad range of impact velocities, making it effective from close-range shots in heavy cover out to longer shots in open country. For truly large or dangerous game like moose or brown bear, a heavier bullet weight may be preferred.
Is 300 RSAUM the same as 300 WSM or 300 Win Mag?
No — the 300 Remington Short Action Ultra Mag (300 RSAUM) is a distinct cartridge and is not interchangeable with 300 WSM (Winchester Short Magnum) or 300 Win Mag. While all three are .30-caliber magnum cartridges with similar performance goals, they have different case dimensions and headspace specifications. Always verify your rifle's exact chamber marking before purchasing ammunition, and never use a cartridge that does not match your rifle's stamped chambering.
Are the brass cases reloadable after firing?
Yes. Remington uses high-quality Boxer-primed brass cases in this ammunition, which are fully reloadable using standard reloading dies sized for the 300 RSAUM. Reloaders appreciate that the short, fat case design of the RSAUM family tends to offer excellent powder capacity and consistent neck tension. Inspect cases for signs of stretching or primer pocket enlargement before reloading, especially after high-pressure loads.
