.22 WMR

Cartridge Data Published On: December 20, 2014 at 11:36 pm by Bullet-Blog and last updated on February 12, 2015 at 11:24 am


.22 Winchester Magnum Rimfire, .22 Magnum, .22 Mag, .22 Win Mag


The .22 WMR (AKA: .22 Winchester Magnum Rimfire, .22 Magnum, .22 Mag,.22 Win Mag) is a Rimfire cartridge with a Bullet Diameter of 0.224 in” (5.69mm) that is primarily used in Pistols and Rifles. The .22 WMR originated in The United States in 1959. The .22 WMR also has a case length of 1.052 in” (26.72mm) and an overall length of 1.35 in” (34.29mm).


The .22 WMR is the largest in the .22 Caliber Rimfire family of cartridges, being longer than both the .22 Long Rifle, .22 WRF, and the .22 Long. The .22 WMR is capable of both more powder and higher pressures due to its more modern cartridge design, and thus is capable of pushing to higher velocities and greater muzzle energies using the same weight projectile as its counterparts. A .22 WMR Cartridge with a 40 grain projectile is capable of reaching well of 2000fps and maintaining a relatively flat trajectory past 100 yards, making a popular cartridge for Varminting.

Associated Firearms

Savage Model 24, Winchester Model 61, Ruger LCR, Kel-tec PMR-30

Cartridge Details

  • Year:
  • Origin:
  • Cartridge Type:
  • Application:
  • Bullet Diameter:
  • Neck Diameter:
  • Shoulder Diameter:
  • Base Diameter:
  • Rim Diameter:
  • Rim Thickness:
  • Case Length:
  • Overall Length:
  • Primer:
  • Max Pressure:
  • CIP:
  • CIP Proof:
  • 1959
  • The United States
  • Rimmed, Straight
  • Pistols
  • 0.224 in” (5.69mm)
  • 0.24 in” (6.1mm)
  • N/A
  • 0.241 in” (6.12mm)
  • 0.291 in” (7.39mm)
  • 0.05 in” (1.27mm)
  • 1.052 in” (26.72mm)
  • 1.35 in” (34.29mm)
  • Rimfire (Rimfire)
  • 24000 psi (165 MPa)
  • 160 MPa (23206 psi)
  • ~208 MPa (30168 psi)

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