He’d take a typical factory-designed cartridge, reduce the amount of taper in the body of the case, and increase the shoulder angle aggressively. 280 Ackley Improved cartridge would blossom into a favorite of savvy open-country hunters across the West.ĭecades ahead of his time in cartridge design, Ackley became a household name for his work, at least among cartridge enthusiasts. However, it’s doubtful he anticipated that more than a half-century later, his. 280 Remington a steep 40-degree shoulder and straightened out most of the cartridge case’s body taper, he likely knew he was on to something special.
