Weatherby Select Plus 280 Ackley Improved ammunition loaded with 139-grain Hammer Bullets delivers the precision and consistency serious long-range hunters demand. The 280 Ackley Improved itself is a refined cartridge—a historically proven wildcat that steepens the shoulder to 40 degrees compared to the standard .280 Remington, unlocking extra powder capacity for improved ballistics and velocity. Paired with premium Hammer Bullets manufactured to exacting tolerances, this 20-round box gives you ammo built for accuracy and terminal performance on game.

Hammer Bullets stand apart in the custom ammunition world through their meticulous manufacturing process. Each bullet is turned on a CNC lathe from a unique solid copper blend formulated to maximize terminal performance while maintaining the consistency that separates hand-tuned loads from factory run-of-the-mill. Individual weighing and micrometer measurement during production means every round in the box meets the same exacting standard—no sorting, no guesswork, no flyers. That's the kind of quality control that translates to tight groups and ethical kills in the field.

The bullet design itself is engineered for controlled expansion. The hollow point initiates expansion immediately upon impact, shedding petals to create a wide wound channel while the remainder of the projectile stays intact with a blunt front end for sustained penetration. This architecture is purpose-built to complement Weatherby's legendary flat-shooting cartridges and the 280 AI's inherent speed. Whether you're running a long-range hunt across open country or precision shooting at distance, this ammunition respects the accuracy potential of your rifle.

Weatherby Select Plus 280 Ackley Improved ammunition loaded with 139-grain Hammer Bullets delivers the precision and consistency serious long-range hunters demand. The 280 Ackley Improved itself is a refined cartridge—a historically proven wildcat that steepens the shoulder to 40 degrees compared to the standard .280 Remington, unlocking extra powder capacity for improved ballistics and velocity. Paired with premium Hammer Bullets manufactured to exacting tolerances, this 20-round box gives you ammo built for accuracy and terminal performance on game.

Hammer Bullets stand apart in the custom ammunition world through their meticulous manufacturing process. Each bullet is turned on a CNC lathe from a unique solid copper blend formulated to maximize terminal performance while maintaining the consistency that separates hand-tuned loads from factory run-of-the-mill. Individual weighing and micrometer measurement during production means every round in the box meets the same exacting standard—no sorting, no guesswork, no flyers. That's the kind of quality control that translates to tight groups and ethical kills in the field.

The bullet design itself is engineered for controlled expansion. The hollow point initiates expansion immediately upon impact, shedding petals to create a wide wound channel while the remainder of the projectile stays intact with a blunt front end for sustained penetration. This architecture is purpose-built to complement Weatherby's legendary flat-shooting cartridges and the 280 AI's inherent speed. Whether you're running a long-range hunt across open country or precision shooting at distance, this ammunition respects the accuracy potential of your rifle.