.22 Winchester Rimfire
Type Rifle
Place of origin United States
Production history
Designed 1890
Bullet diameter .226 in (Bad rounding hereScript error mm)
Neck diameter .2435 in (Bad rounding hereScript error mm)
Base diameter .2455 in (Bad rounding hereScript error mm)
Rim diameter .300 in (Bad rounding hereScript error mm)
Rim thickness .050 in (Bad rounding hereScript error mm)
Case length .965 in (Bad rounding hereScript error mm)
Overall length 1.180 in (Bad rounding hereScript error mm)
Rifling twist 1-14"
Primer type rimfire
Ballistic performance
Bullet weight/type Velocity Energy
45 gr (Bad rounding hereScript error g) standard velocity1,050 ft/s (Bad rounding hereScript error m/s)105 ft·lbf (Bad rounding hereScript error J)
45 gr (Bad rounding hereScript error g) 1,450 ft/s (Bad rounding hereScript error m/s)210 ft·lbf (Bad rounding hereScript error J)
40 gr (Bad rounding hereScript error g) hollowpoint (high velocity)1,440 ft/s (Bad rounding hereScript error m/s)185 ft·lbf (Bad rounding hereScript error J)
Source(s): Barnes & Amber 1972

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

Introduced in the Winchester M1890 slide rifle, it had a flat-nose slug, and is identical to the .22 Remington Special (which differed only in having a roundnosed slug).[1] It uses a flat-based, inside-lubricated bullet, which differs from the outside-lube slug of the .22 Short, Long, LR, and Extra Long rounds.[1]

When introduced, the .22WRF "was the first notable improvement in the killing power" over the .22LR,[2] and was able to kill cleaner at up to 75 yd (70 m). It is somewhat less accurate than the .22 LR[1] and is most suited to hunting small game such as rabbits or prairie dogs.[2]

A variety of Winchester, Remington, and Stevens single-shots and repeater rifles were offered from 1890 onward, but new rifles are not made for this cartridge. .22 WRF ammunition is periodically offered by commercial makers for use in the old guns.[1] It can be fired in any rifle chambered for the more powerful .22 WMR.[1] The shorter WRF cartridge may be limited to single shot use in WMR rifles, since it may not feed from WMR length magazines, depending on design.

See alsoEdit


  1. 1.0 1.1 1.2 1.3 1.4 Barnes, p.275, ".22 Winchester Rimfire (WRF)".
  2. 2.0 2.1 Barnes, p.275, ".22 Winchester Rimfire (WRF).


  • Barnes, Frank C., ed. by John T. Amber. ".22 Winchester Rimfire", in Cartridges of the World, pp. 275 & 282-3. Northfield, IL: DBI Books, 1972. ISBN 0-695-80326-3.

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