.280 Ackley Improved

Photo coming soon: side view on a transparent background, with author and license.

Key specs

Type: Rifle
Origin: United States
Designer: P.O. Ackley
Introduced: 2007
Case type: rimmed, bottleneck
Bullet diameter: 7.21 mm
Case length: 64.13 mm
Overall length: 84.58 mm
Parent case: .280 Remington

Sources

Wikipedia: .280 Ackley Improved, Wikipedia
Wikipedia: Table of handgun and rifle cartridges, Wikipedia