Flat-shooting rimfire varmint cartridge. Extremely fast for a rimfire. Popular for prairie dogs and small predators. Minimal recoil.
Type: Rimfire
Introduced: 2002, United States
Parent case: .22 WMR
Standardization: SAAMI
Bullet diameter: 0.172" (4.37 mm)
Case length: 1.058" (26.9 mm)
Overall length: 1.349" (34.26 mm)
Max pressure: 26,000 PSI
Rim type: Rimfire
Primer: Rimfire
Typical twist rate: 1:9
Muzzle velocity: 2375–2650 fps
Muzzle energy: 200–325 ft-lbs
Effective range: 200 yd
Common bullet weights: 15, 17, 20 gr
Primary use: Varmint, Target
Production status: Active
Also known as: .17 Hornady Magnum Rimfire
History: Introduced by Hornady in 2002 as the first successful .17 caliber rimfire. Rapidly became most popular rimfire varmint cartridge. Based on necked-down .22 WMR case.
Notable firearms: Savage 93R17, Ruger 77/17, CZ 455, Tikka T1x
Similar cartridges: .22 WMR, .22 LR