The Sierra 1840 GameKing delivers consistent expansion and deep penetration for medium to large game hunting in 270 Winchester rifles. This 150-grain spitzer boat tail design combines proven accuracy with reliable terminal performance across hunting distances.
What Makes This Different
Sierra's GameKing construction features a tapered jacket with controlled expansion characteristics that retain 60-70% of original weight upon impact. The boat tail design reduces drag coefficient by approximately 15% compared to flat-base bullets, extending effective range and maintaining velocity downrange. The lead core bonding process ensures consistent mushrooming while preventing core separation on heavy bone contact.Key Features
- 150-grain spitzer boat tail optimized for 270 Winchester cartridges
- Tapered jacket construction for controlled expansion and weight retention
- Boat tail base reduces drag and improves long-range ballistics
- Lead core designed for reliable expansion at velocities from 1,800-3,000 fps
- Precision-swaged construction maintains consistent bullet-to-bullet dimensions
- 100-count bulk packaging for extended hunting seasons
- Ballistic coefficient of approximately 0.408 for flat trajectory performance
Technical Specs
- Caliber: 270 Winchester (.277 diameter)
- Bullet Weight: 150 grains
- Bullet Type: Spitzer Boat Tail (SPBT)
- Ballistic Coefficient: 0.408 (G1)
- Sectional Density: 0.279
- Recommended Twist Rate: 1:10 inches
- Quantity: 100 bullets per box
- Manufacturer: Sierra Bullets
- Country of Origin: United States
