HSM 300 RUM 150GR Game King – 20rd Box

The HSM 300 RUM 150GR Game King is factory-loaded hunting ammunition featuring Sierra GameKing spitzer boat-tail bullets. It is supplied in a 20-round box and is intended for hunting applications where precision and terminal performance are priorities. The cartridges use brass cases and are marked as reloadable. Components are matched to Sierra GameKing/Pro-Hunter bullets for consistent accuracy.

Key Specifications

• The cartridge is chambered in .300 RUM.
• The bullet weight is 150 GRAINS.
• The bullet type is JACKETED SOFT POINT.
• There are 20 cartridges per box.
• There are 20 boxes per case.
• The listed muzzle velocity is 3390 fps.
• The listed muzzle energy is 3829 ft lbs.
• The case material is Brass.
• This load is marked as Reloadable: Yes.
• The stated application is Hunting.

Built around the time-honored Sierra GameKing profile and matched components, this load is engineered for reliable field performance and consistent accuracy. It is a straightforward factory option for shooters who prioritize effective hunting ammunition in .300 Remington Ultra Magnum.