Rimfire · SAAMI

.22 Winchester Rimfire

.22 WRF.22 Remington Special.22-7-4522 Win RF

Winchester's original high-performance .22 rimfire, introduced for the iconic Model 1890 pump-action rifle.

Caliber
0.2285″ · 5.804 mm
Introduced
1890
Case
Rimfire
Primary use
Hunting, Target
Status
Active
Velocity1,300–1,450 fps
Energy169–210 ft·lb
Typical grains45 gr
Identity
Introduced
1890
Type
Rimfire
Origin
United States
Inventor
Winchester Repeating Arms
Manufacturer
Winchester / CCI
Standard
SAAMI
Status
Active
Availability
Specialty
Build
Case capacity
5 gr H₂O
Twist (typical)
1:16
Primer
Rimfire
Case type
Rimfire
Pressure & range
Max pressure
24,000 psi
Eff. range
100 yd
Max range
250 yd
Recoil
0.3–0.6 ft·lb
Subsonic
Capable

Ballistics

Representative trajectory · 25 yd zero0–200 yd
25 yd · zero0″−29″29″ drop @ 200 yd0100200Open in Ballistic Compare ↗
By real loads
995–1,450 fps · 8 loads
Parent case

Representative trajectory — modeled from a single velocity input (no published BC for this cartridge yet).

Performance

Best for HuntingLapua Lapua Tenex45 gr · LRN · 1,450 fpsBuy now →

Buy links open .22 Winchester Rimfire ammunition at Rivertown Munitions.

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 ⌀5.800.229
Neck ⌀6.180.243
Shoulder ⌀n/a
Shoulder anglen/a
Base ⌀6.240.246
Rim ⌀7.620.300
Belt ⌀n/a
Rim thickness1.270.050
Neck lengthn/a
Case length24.510.965
Overall length29.971.180

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 Winchester Rimfire is highlighted below.

Factory loads

In production — 8 active loads across 8 brands. Top 15 shown · see all 20 →.

BrandLoadGrainBulletFPSft·lbBC
LapuaLapua Tenex45LRN1,450210
Sellier & BellotS&B WRF45LRN1,450210
CCILead FP45Lead FP1,300169
AguilaLead FP45Lead FP1,300169
NormaClassic45Lead FP1,000100
RWSRimfire45Lead RN1,000100
FederalChampion45Lead FP1,000100
EleySport45Lead FP99599
UMCLead FP45Lead FP1,300169
WinchesterLead FP45Lead FP1,300169
RemingtonLead FP45Lead FP1,300169
PPUStandard45Lead Round Nose1,300169
NormaClassic45Lead Round Nose1,300169
RemingtonGolden Bullet45Lead Round Nose1,300169
PetersLead FP45Lead FP1,300169

Velocities are manufacturer-stated (test-barrel). Discontinued loads dimmed.

Connected reference

History

Winchester introduced the .22 WRF in 1890 alongside the Model 1890 slide-action rifle — the first successful pump-action .22 and a staple of shooting galleries across America. The cartridge uses a slightly larger case diameter than the .22 LR family, making them incompatible; a firearm chambered in .22 WRF cannot safely fire .22 LR. Remington chambered their Model 12 pump rifle in .22 WRF as well, calling the cartridge the '.22 Remington Special.' The introduction of the .22 WMR in 1959 largely supplanted it in the marketplace, but Winchester and CCI continued producing it for the large installed base of Model 1890 and Model 12 rifles. It remains available today — a 135-year-old cartridge still in active production.

FAQs

What twist rate does .22 Winchester Rimfire use?
.22 Winchester Rimfire typically uses a 1:16 twist rate.
What bullet diameter is .22 Winchester Rimfire?
.22 Winchester Rimfire uses a 0.2285″ (5.804 mm) diameter bullet.
Is .22 Winchester Rimfire still in production?
.22 Winchester Rimfire is active; typical availability is specialty.
What is .22 Winchester Rimfire used for?
.22 Winchester Rimfire is primarily used for hunting, target.

Sources & provenance

Data & sources. Specs compiled from the Lindcott Armory reference; availability counted from 8 live factory loads; the trajectory is modeled (point-mass), not measured. See methodology. Spotted an error? Report it →