Description
The HSM Game King 300 Remington Ultra Magnum load pairs a 165 grain Sierra GameKing soft point bullet with dependable brass and consistent HSM loading standards. This round is built for hunters who want a proven bullet design chambered in one of the hardest hitting magnum cartridges available to civilian shooters.
The Sierra GameKing bullet uses a boat tail design and a soft point construction intended to expand reliably on impact while maintaining structural integrity for deep penetration. This makes it a common choice for hunters pursuing larger bodied game such as elk, mule deer, and other big game animals across varied terrain, including open country where longer shots are common.
The 300 Remington Ultra Magnum case gives shooters a flatter trajectory and additional reach compared to standard magnum cartridges, which is why this cartridge sees regular use among western hunters and those who spend time in open plains or mountain terrain where extended range shots can happen. The GameKing bullet’s expansion characteristics are designed to create meaningful wound channels on medium to large game while still holding together for adequate penetration.
This ammunition suits hunters who already own a rifle chambered in 300 RUM and are looking for a well known, established bullet choice for fall hunting seasons. It is not intended for target shooting or high volume range use given its hunting-specific bullet design and cartridge cost per round. Recoil with this cartridge is significant, so shooters new to magnum rifles should practice proper technique before heading afield.
Caliber Depot carries this HSM Game King load for hunters in Arizona and beyond who want a trusted big game round from an established American ammunition manufacturer.
- Caliber: 300 Remington Ultra Magnum
- Bullet Weight: 165 grains
- Bullet Type: Sierra GameKing Soft Point
- Rounds Per Box: 20
- Manufacturer: HSM Ammunition
- Intended Use: Big game hunting






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