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If you're running a .280 Ackley and want to take full advantage of what this cartridge delivers, the Weatherby Select Plus line with Hammer Custom bullets is purpose-built to do exactly that. This isn't a generic load – it's engineered specifically for the 280 AI's efficiency and velocity potential.
The 139-grain Hammer Custom bullet sets this load apart from the typical offerings. Each bullet is CNC-turned from solid copper and individually weighed and measured as it's produced. That level of precision means you get the consistency that separates good shooting days from great ones. At 3050 fps from the muzzle with 2871 foot-pounds of energy, this load pushes flat trajectories downrange and delivers the kind of ballistic performance the cartridge was designed for.
Hammer's design philosophy centers on reliable expansion across a wide velocity window. The hollow point sheds copper petals on impact while the main shank stays intact, creating a blunt frontal area that punches through and holds together. This controlled expansion means better penetration and weight retention compared to more fragmentary designs. The solid copper construction also means no lead exposure during handling.
Weatherby built their reputation on ballistics and velocity, and this Select Plus load demonstrates that commitment. The 280 AI improved the .280 Remington by steepening the shoulder to increase powder capacity, giving you roughly 100 fps more velocity than standard .280 Remington loads. That advantage translates to flatter shooting and better downrange energy, making this cartridge one of the most versatile options for western hunting at distance. Premium brass and careful loading tolerances ensure you get the same velocity shot to shot.
Hammer bullets are CNC-turned from solid copper and individually weighed and measured during production, ensuring exceptional consistency. The design creates a hollow point that sheds petals on impact while retaining a solid shank for penetration. This combination gives you controlled expansion with reliable weight retention across a wide velocity range.
Yes. The 280 AI produces impressive velocities with relatively mild recoil, making it excellent for extended-range hunting. At 3050 fps with the 139-grain bullet, this load delivers flat trajectories and strong downrange energy for medium to large game at distance. Many hunters consider it one of the best all-around western cartridges for its ballistic capability and shootability.
The 280 AI was created by steepening the shoulder angle to 40 degrees, which increases powder capacity over the standard 280 Remington. This design change gives you approximately 100 fps more velocity while maintaining similar or less recoil. The improved ballistics make it comparable to a 7mm Remington Magnum but with better efficiency and less powder consumption.
This load is specifically chambered for .280 Ackley Improved rifles and is not compatible with .280 Remington chambers. Verify your rifle is chambered for 280 AI before purchasing. The cartridge became a SAAMI standard in 2007, so modern rifles should be clearly marked with the correct chamber.
| Caliber/Gauge | .280 Ackley Improved |
|---|---|
| Cost per Round | 3.60 |
| Grains | 139 GR |
| Manufacturer | |
| Manufacturer Part Number | M280A139HCB |
| Shipping Weight | 1.28 |
| Units per Box | 20 |
| UPC | 747115452675 |
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