
Availability: In Stock
The Sierra Bullets 9300 .338 Caliber MatchKing 300 Gr HPBT is a precision rifle bullet built for long-range accuracy in magnum cartridges. Engineered for shooters running .338 Winchester Magnum, .338-378 Weatherby, and similar big-bore platforms, this 300-grain hollow-point boat-tail follows Sierra's legendary MatchKing design philosophy: match-grade concentricity, tight aerodynamic tolerances, and inherent accuracy that's earned world records on the range. If you're handloading for extreme-distance rifle work or competitive shooting where every tenth of an inch matters, this bullet delivers the precision you're chasing.
The 500-count box gives you enough rounds to develop loads, practice long-range drills, and dial in your magnum rifle without constant restock runs. MatchKing bullets are purpose-built for target shooting and precision applications where velocity and trajectory consistency trump hunting performance. Their design philosophy prioritizes match-grade accuracy over the rapid expansion needed for game, so they shine brightest on the bench or at distant steel—not in the field. Sierra's stringent quality control means you get bullets that hold tight to spec, a prerequisite for groups that truly showcase your rifle's potential.
One critical note: this load requires a barrel twist rate of at least 1-in-10 inches to stabilize properly. Slower twists won't reliably stabilize a projectile this heavy and long, so verify your rifle's specs before ordering. If your .338 magnum has the right twist, you've got 500 rounds of some of the most consistent, record-setting .338 bullets on the market—the kind of ammunition that lets you focus purely on your shooting fundamentals and wind reading.
| Caliber | .338 |
| Bullet Weight | 300 grains |
| Bullet Type | Hollow-Point Boat-Tail (HPBT) |
| Quantity | 500 count |
| Minimum Barrel Twist | 1 in 10 inches |
| Recommended Use | Target shooting, precision rifle, long-range competition |
Sierra designed the 9300 for rifles chambered in .338 Winchester Magnum, .338-378 Weatherby, and similar .338 magnum cartridges. Always verify your specific rifle's chamber and load data before handloading.
This projectile requires a minimum barrel twist rate of 1 in 10 inches. If your barrel has a slower twist (1 in 12, 1 in 14, etc.), it will not stabilize reliably. Check your rifle's specs or contact the manufacturer before purchasing.
No. MatchKing bullets are engineered for target shooting and precision rifle competition, not hunting applications. Their design does not provide reliable expansion on game. For hunting, choose a softpoint or bonded bullet designed for that purpose.
This product includes 500 bullets, providing a bulk quantity for load development, practice, and extended range sessions without frequent reorders.




SKU: 126458612 • Width: 5.75in • Height: 4.75in • Depth: 7in • Weight: 21.44oz




Availability: In Stock
The Sierra Bullets 9300 .338 Caliber MatchKing 300 Gr HPBT is a precision rifle bullet built for long-range accuracy in magnum cartridges. Engineered for shooters running .338 Winchester Magnum, .338-378 Weatherby, and similar big-bore platforms, this 300-grain hollow-point boat-tail follows Sierra's legendary MatchKing design philosophy: match-grade concentricity, tight aerodynamic tolerances, and inherent accuracy that's earned world records on the range. If you're handloading for extreme-distance rifle work or competitive shooting where every tenth of an inch matters, this bullet delivers the precision you're chasing.
The 500-count box gives you enough rounds to develop loads, practice long-range drills, and dial in your magnum rifle without constant restock runs. MatchKing bullets are purpose-built for target shooting and precision applications where velocity and trajectory consistency trump hunting performance. Their design philosophy prioritizes match-grade accuracy over the rapid expansion needed for game, so they shine brightest on the bench or at distant steel—not in the field. Sierra's stringent quality control means you get bullets that hold tight to spec, a prerequisite for groups that truly showcase your rifle's potential.
One critical note: this load requires a barrel twist rate of at least 1-in-10 inches to stabilize properly. Slower twists won't reliably stabilize a projectile this heavy and long, so verify your rifle's specs before ordering. If your .338 magnum has the right twist, you've got 500 rounds of some of the most consistent, record-setting .338 bullets on the market—the kind of ammunition that lets you focus purely on your shooting fundamentals and wind reading.
| Caliber | .338 |
| Bullet Weight | 300 grains |
| Bullet Type | Hollow-Point Boat-Tail (HPBT) |
| Quantity | 500 count |
| Minimum Barrel Twist | 1 in 10 inches |
| Recommended Use | Target shooting, precision rifle, long-range competition |
Sierra designed the 9300 for rifles chambered in .338 Winchester Magnum, .338-378 Weatherby, and similar .338 magnum cartridges. Always verify your specific rifle's chamber and load data before handloading.
This projectile requires a minimum barrel twist rate of 1 in 10 inches. If your barrel has a slower twist (1 in 12, 1 in 14, etc.), it will not stabilize reliably. Check your rifle's specs or contact the manufacturer before purchasing.
No. MatchKing bullets are engineered for target shooting and precision rifle competition, not hunting applications. Their design does not provide reliable expansion on game. For hunting, choose a softpoint or bonded bullet designed for that purpose.
This product includes 500 bullets, providing a bulk quantity for load development, practice, and extended range sessions without frequent reorders.
SKU: 126458612 • Width: 5.75in • Height: 4.75in • Depth: 7in • Weight: 21.44oz



