The first modern high-velocity .22 centerfire rifle cartridge. Grandfather of all modern varmint cartridges.
Type: Rifle
Introduced: 1930, United States
Parent case: .22 WCF
Standardization: SAAMI
Bullet diameter: 0.224" (5.69 mm)
Case length: 1.403" (35.64 mm)
Overall length: 1.723" (43.76 mm)
Max pressure: 47,000 PSI
Rim type: Rimmed
Primer: Small Rifle
Typical twist rate: 1:14
Muzzle velocity: 2600–3100 fps
Muzzle energy: 400–650 ft-lbs
Effective range: 250 yd
Common bullet weights: 35, 40, 45 gr
Primary use: Varmint, Small Game
Production status: Active
Also known as: 5.6x35mmR
History: Evolved from the .22 WCF through a series of military and civilian experiments in the 1920s. Winchester standardized it in 1930. The original modern varmint cartridge, it set the template for all subsequent .22 centerfires.
Notable firearms: Winchester Model 54, Ruger No. 3, CZ 527
Similar cartridges: .222 Remington, .223 Remington