Last reviewed: 2026-04-18 by Jake Terry, FFL07/SOT3, NRA-certified firearms instructor.
Pest control on the farm or ranch demands reliability at arm’s length, and the CCI 22 WMR shotshell delivers it. This 22 Winchester Magnum Rimfire (WMR) load is a rimfire shotshell — a cartridge that chambers #12 lead shot inside a rimfire case, designed for close-range vermin dispatch. At 1000 feet per second, the 52-grain payload remains subsonic, keeping noise down while putting a pattern on target inside 10 yards. CCI engineers this load for revolvers; semi-automatic rimfire actions may not cycle shotshells reliably due to reduced recoil impulse and hull crimp interference with feed ramps.
Load Profile
The rimfire shotshell is a specialty round — not a target load, not a small game load, but a pest-control tool for snakes, rats, and other nuisance animals at point-blank to near range. CCI manufactures this ammunition in the United States with lead shot and a standard rimfire primer. The subsonic velocity rating keeps report minimal compared to high-velocity rimfire loads, an advantage when working around livestock or buildings. Do not use shotshells in handguns equipped with ported compensators — the shot payload can damage ports and redirect gases unpredictably.
The Numbers
| Spec | Value |
|---|---|
| Cartridge | 22 Winchester Magnum Rimfire (WMR) |
| Shot size | #12 lead |
| Payload weight | 52 grains |
| Muzzle velocity | 1000 fps |
| Velocity rating | Subsonic |
| Lead-free | No |
| Rounds per box | 20 |
| Intended use | Pest control |
| Country of origin | United States |
| Manufacturer | CCI |
CCI packages this load 20 rounds per box. For additional 22 WMR ammo options — including conventional jacketed hollow point and full metal jacket loads — browse our rimfire inventory.
Safe Handling & Compliance
Federal law requires purchasers to be at least 18 years old for rifle and shotgun ammunition, and at least 21 for handgun ammunition. Ammunition cannot be shipped to certain states, counties, and cities — review our ammunition shipping restrictions before ordering. Store ammunition in a cool, dry location away from heat sources and out of reach of unauthorized users.
- Treat every firearm as if it is loaded. Keep the muzzle pointed in a safe direction at all times.
- Verify compliance with all applicable federal, state, and local laws before purchasing or possessing ammunition.
- This ammunition contains lead. Wash hands thoroughly after handling. Comply with California Proposition 65 warnings where applicable.
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