The Sierra 1940 GameKing 7mm 175gr Spitzer Boat Tail delivers exceptional accuracy and terminal performance for medium to large game hunting. This premium hunting bullet combines Sierra's proven boat tail design with optimal weight retention for consistent expansion at extended ranges.
What Makes This Different
The GameKing's tapered jacket construction provides controlled expansion while maintaining structural integrity through bone and heavy muscle. Unlike standard cup-and-core bullets, the GameKing features a precisely engineered jacket thickness that varies from nose to base, ensuring reliable mushrooming at velocities from 1,800 to 3,000 fps. The boat tail base reduces drag coefficient by approximately 15% compared to flat-base designs, extending effective range and improving wind drift resistance.
Key Features
- 175-grain weight optimized for 7mm magnum cartridges and long-range performance
- Spitzer boat tail profile with 0.493 ballistic coefficient for superior downrange energy
- Tapered jacket construction from 0.030" at nose to 0.025" at base
- Lead antimony core provides 85-90% weight retention after impact
- Precision-drawn gilding metal jacket ensures consistent concentricity
- Compatible with 7mm Remington Magnum, 7mm WSM, 28 Nosler, and similar cartridges
- Bulk packaging reduces cost per round for high-volume reloaders
Field testing demonstrates consistent 1.5-2 MOA accuracy in quality hunting rifles when properly loaded. The 175-grain weight provides excellent sectional density of 0.310 for deep penetration on elk, moose, and similar-sized game. Terminal ballistics remain effective at ranges exceeding 400 yards, making this bullet suitable for open-country hunting where long shots are common. The boat tail design maintains supersonic velocity longer than flat-base alternatives, reducing wind drift and drop compensation requirements.
Technical Specs
- Caliber: 7mm (.284 diameter)
- Weight: 175 grains
- Ballistic Coefficient: 0.493 (G1)
- Sectional Density: 0.310
- Jacket Material: Gilding metal (90% copper, 10% zinc)
- Core Material: Lead antimony alloy
- Overall Length: 1.385 inches
- Recommended Twist Rate: 1:9.5" or faster
- Quantity: 100 bullets per box
- Manufactured in USA
Sierra's GameKing represents four decades of bullet engineering refinement, delivering the consistency serious hunters demand. The 100-count packaging provides excellent value for reloaders developing precision loads for multiple hunting seasons.