The Sierra 9631MP MatchKing delivers exceptional accuracy for precision shooting applications with its proven hollow point boat tail design. This 131-grain .25 caliber bullet features Sierra's renowned MatchKing construction, engineered for consistent ballistic performance across competitive and precision shooting disciplines.
What Makes This Different
Sierra MatchKing bullets utilize a precision-formed hollow point that creates optimal aerodynamic stability while maintaining consistent weight distribution. The boat tail design reduces drag coefficient by approximately 6-8% compared to flat-base bullets of similar weight. Each bullet undergoes Sierra's multi-stage quality control process, ensuring weight variance stays within ±0.3 grains across the entire production lot.
Key Features
- 131-grain weight optimized for .25 caliber cartridges including .257 Roberts and .25-06 Remington
- Hollow point boat tail (HPBT) design for superior ballistic coefficient
- Jacket thickness engineered for consistent expansion at target velocities
- Lead core swaged to precise specifications for uniform density
- Boat tail angle machined to 9-degree specification for drag reduction
- Bulk packaging of 250 bullets per box for high-volume reloaders
- Compatible with standard .257" diameter bore specifications
These bullets excel in competitive target shooting where sub-MOA accuracy is essential. The 131-grain weight provides excellent stability in standard twist rates while maintaining flat trajectory characteristics out to extended ranges. Sierra's manufacturing tolerances ensure consistent point of impact across multiple shooting sessions, making load development more predictable for precision handloaders.
Technical Specs
- Caliber: .25 (0.257" diameter)
- Weight: 131 grains
- Style: Hollow Point Boat Tail (HPBT)
- Sectional Density: 0.283
- Recommended Twist Rate: 1:10" or faster
- Quantity: 250 bullets per box
- Manufacturer: Sierra Bullets
- Model Number: 9631MP
- Country of Origin: United States
Sierra's MatchKing line represents decades of bullet manufacturing expertise translated into consistent, competition-grade projectiles. The 250-count packaging format provides serious handloaders with sufficient quantity for extensive load development while maintaining the precision standards expected from Sierra's premium bullet lineup.