Rimfire cartridge reference
.22 WMR Ammunition
Also known as .22 Magnum, .22 Mag, 5.7x27mmR.
A hotter rimfire than .22 LR with more range and energy for varmints and small game, at a higher price per round.
At a glance
Common firearms in .22 WMR
Frequently asked
How much does .22 WMR cost per round?+
.22 WMR typically runs about $0.18–$0.40 per round online, roughly $290 for a 1,000-round case at the middle of that range (as of 2026). Bulk cases lower the per-round cost, while premium defensive or match loads run higher. Prices move with supply, so track your own cost per round over time.
What is .22 WMR used for?+
.22 WMR is most commonly used for small game, varmint. A hotter rimfire than .22 LR with more range and energy for varmints and small game, at a higher price per round.
What firearms are chambered in .22 WMR?+
Popular options include Ruger 10/22 Magnum, Smith & Wesson 351, Kel-Tec PMR-30. It falls in the rimfire category.
How much does .22 WMR recoil, and is it available?+
.22 WMR has light recoil for its class, and availability is currently "common." You'll find it at most retailers and online.
Track your .22 WMR the smart way
Rangium logs your .22 WMR by the round: stock on hand, cost per round and spend over time, with low-stock warnings when you run short. Ask Vanta how much you have left, and list or find .22 WMR firearms in the marketplace.