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280 Ackley Improved Ammo

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  • 280 Ackley Improved
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280 Ackley ammo comes in bullet weights of 140 to 168 grains. The most popular and commercially available 280 Ackley bullet weights are 139, 150 and 168 grains. The 280 Ackley is an older cartridge dating back to the early 1950s. It packs a lot of energy, more than enough for moose or elk at distance. Performance ballistics for 139, 150 and 168 grains are found in the following table.

280 ACKLEY IMPROVED VELOCITY
100 yd 200 yd 300 yd 400 yd 500 yd
139 gr 2,817 ft/s 2,596 ft/s 2,385 ft/s 2,184 ft/s 1,993 ft/s
150 gr 2,777 ft/s 2,612 ft/s 2,452 ft/s 2,297 ft/s 2,148 ft/s
168 gr 2,711 ft/s 2,554 ft/s 2,402 ft/s 2,255 ft/s 2,113 ft/s
280 ACKLEY IMPROVED ENERGY
100 yd 200 yd 300 yd 400 yd 500 yd
139 gr 2,449 ft⋅lb 2,080 ft⋅lb 1,756 ft⋅lb 1,472 ft⋅lb 1,226 ft⋅lb
150 gr 2,569 ft⋅lb 2,271 ft⋅lb 2,002 ft⋅lb 1,758 ft⋅lb 1,537 ft⋅lb
168 gr 2,742 ft⋅lb 2,433 ft⋅lb 2,152 ft⋅lb 1,896 ft⋅lb 1,665 ft⋅lb

Disclaimer: Actual velocity and energy ballistics may vary.