.22 Winchester Magnum Rimfire

.22 Winchester Magnum Rimfire

Type

rimfire

Place of origin

  USA

Production history

Designer

Winchester

Designed

1959

Manufacturer

Winchester

Produced

1960–Present

Specifications

Parent  case

.22 WRF

Bullet  diameter

0.224 in (5.7 mm)

Neck diameter

0.24 in (6.1 mm)

Base diameter

0.241 in (6.1 mm)

Rim diameter

0.291 in (7.4 mm)

Rim thickness

0.046 in (1.2 mm)

Case length

1.052 in (26.7 mm)

Overall length

1.35 in (34 mm)

Primer  type

Rimfire

Ballistic performance

Bullet weight/type

Velocity

Energy

30  gr (1.9  g ) HP

2,200 ft/s (670 m/s)

322  ft·lbf (437  J )

40  gr (2.6  g ) JHP

1,910 ft/s (580 m/s)

324  ft·lbf (439  J )

50  gr (3.2  g ) JHP

1,650 ft/s (500 m/s)

300  ft·lbf (410  J )