HSM 300 RUM 180-Grain Sierra GameKing Ammunition

HSM 300 RUM Hunting Ammunition

HSM has engineered a complete line of hunting ammunition built around the proven Sierra GameKing bullet platform. This 300 RUM load features a 180-grain Sierra GameKing spitzer boat tail projectile—a bullet design refined over decades for consistent, reliable performance on game.

What Makes This Load Work

Every component in this ammunition has been carefully matched to the GameKing bullet. HSM doesn't simply pair bullets with powder and primers; they optimize the entire system to maximize accuracy and terminal performance.

Key Features:

• 180-grain Sierra GameKing spitzer boat tail bullet
• Precision component matching for consistent velocities
• Designed for hunting applications from medium to large game
• 20 rounds per box

The GameKing Advantage

The Sierra GameKing has earned its reputation through decades of field use. The boat tail design improves ballistic efficiency, while the spitzer profile delivers excellent velocity retention downrange. The bullet's construction ensures reliable expansion while maintaining structural integrity for deep penetration.

This is ammunition built by shooters who understand that hunting success depends on both accuracy and terminal performance. HSM's commitment to component matching means you get consistent results shot after shot.