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Lindcott Armory

Rimfire · SAAMI

.22 WMR

Also known as .22 Magnum · .22 Winchester Magnum Rimfire

Powerful rimfire magnum.

Caliber
0.224″ · 5.69 mm
Introduced
1959
Case
Rimfire
Parent
.22 WRF
Primary use
Hunting, Varmint, Self Defense
Status
Active

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VelocityBeing verified
EnergyBeing verified
Typical grains30 · 40 · 45 gr
Identity
Introduced
1959
Type
Rimfire
Origin
United States
Inventor
Winchester
Manufacturer
Winchester Ammunition
Standard
SAAMI
Status
Active
Availability
Common
Build
Case capacity
5.5 gr H₂O
Twist (typical)
1:16
Primer
Rimfire
Case type
Rimfire
Pressure & range
Max pressure
24,000 psi
Eff. range
125 yd
Recoil
0.4–0.8 ft·lb
Subsonic
Capable

Introduced by Winchester Ammunition

Ballistics

Published velocity/energy data isn't available for .22 WMR. Parent case: .22 WRF.

Performance

Best for Withheld until verified
Best for Withheld until verified
Dimensionscase measurements · scale drawing · size vs familiar rounds

Case dimensions — the scale drawing at the top of the page is built from these.

SAAMI · verified
Measuremmin✓
Bullet ⌀ 5.690.224 ✓
Neck ⌀ 6.180.243 ✓
Shoulder ⌀ n/a
Shoulder angle n/a
Base ⌀ 6.190.244 ✓
Rim ⌀ 7.620.300 ✓
Belt ⌀ n/a
Rim thickness 1.270.050 ✓
Neck length n/a
Case length 26.801.055 ✓
Overall length 34.291.350 ✓

Size vs familiar rounds

Drawn at true 1:1 — every case is accurate relative to the others. Absolute size depends on your screen's pixel density, so measuring one against a real ruler may be off. .22 WMR is highlighted below.

Factory loads

Verification

Being verified

Advertised FPS, energy, and BC are withheld until loads clear verification.

Firearms chambered in .22 WMR

12 models in the database chamber .22 WMR. Browse all →

CZ CZ 457 LRP Long Range Precision 22 LRWalther Arms WMP .22 WMR 6.5-inchRuger Super Wrangler .22 LR/.22 WMR 5.5-inchCZ CZ 457 Thumbhole Varmint Laminate 22 LRCZ CZ 457 Varmint Precision Chassis 22 WMRWalther WMP .22 WMR 4.5-inchWalther Arms WMP .22 WMR 4.5-inchTaurus 942 .22 WMR 8-ShotCZ CZ 457 Scout 22 WMRWalther WMPHenry Repeating Arms Axe .22 LR 15.14-inchHenry Repeating Arms Axe .22 WMR 15.14-inch

Lineage

Immediate parent
.22 WRF
Direct descendants (1)
.17 HMR
Family TreeOpen .22 WMR in the interactive cartridge family tree

Connected reference

Loads120 factory loads for .22 WMRFirearmsFirearms in .22 WMR

History

Introduced by Winchester in 1959. Designed for longer-range rimfire hunting. Gained popularity with Ruger Single-Six convertible revolvers. Parent case for .17 HMR.

FAQs

What twist rate does .22 WMR use?
.22 WMR typically uses a 1:16 twist rate.
What bullet diameter is .22 WMR?
.22 WMR uses a 0.224″ (5.69 mm) diameter bullet.
Is .22 WMR still in production?
.22 WMR is active; typical availability is common.
What is .22 WMR used for?
.22 WMR is primarily used for hunting, varmint, self defense.
What is .22 WMR based on?
.22 WMR is derived from the .22 WRF case.

Sources & provenance

Data & sources. Specs compiled from the Lindcott Armory reference; availability counted from 120 live factory loads; the trajectory is modeled (point-mass), not measured. See methodology. Spotted an error? Report it →