.22 Winchester Rimfire

.22 Winchester Rimfire
.22 Long Rifle (left) and .22 Winchester Rimfire (right).
TypeRifle
Place of originUnited States
Production history
Designed1890
Produced1890–present
Specifications
Case typeRimmed, straight
Bullet diameter.2285 mm (0.00900 in)
Neck diameter.2435 mm (0.00959 in)
Base diameter.2455 mm (0.00967 in)
Rim diameter.300 mm (0.0118 in)
Rim thickness.050 mm (0.0020 in)
Case length.965 mm (0.0380 in)
Overall length1.180 mm (0.0465 in)
Rifling twist1-14 in (360 mm)
Primer typeRimfire
Maximum pressure20,000 MPa (2,900,000 psi)
Ballistic performance
Bullet mass/type Velocity Energy
45 gr (2.9 g) standard velocity 1,050 ft/s (320 m/s) 105 ft⋅lbf (142 J)
45 gr (2.9 g) solid lead 1,450 ft/s (440 m/s) 210 ft⋅lbf (280 J)
40 gr (2.6 g) hollowpoint (high velocity) 1,440 ft/s (440 m/s) 185 ft⋅lbf (251 J)
Sources: Barnes & Amber 1972

The .22 Winchester Rimfire (commonly called the .22 WRF or .22 Remington Special) is an American rimfire rifle cartridge.

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