Last reviewed: 2026-04-18 by Jake Terry, FFL07/SOT3, NRA-certified firearms instructor.
Federal Game-Shok 22 WMR ammo bridges the gap between varmint control and small game hunting with a 50-grain jacketed hollow point that exits the muzzle at 1530 feet per second. The 22 Winchester Magnum Rimfire cartridge, introduced by Winchester in 1959, delivers nearly three times the muzzle energy of standard 22 Long Rifle — and this Federal load puts 260 foot-pounds on target, enough to anchor squirrels, rabbits, and even coyotes at close range. The copper-plated hollow point cavity initiates expansion on contact with soft tissue while the jacket controls fragmentation, giving you exit wounds and blood trails instead of surface splatter.
Load Profile
Federal uses a rimfire primer mix tuned for consistent ignition across temperature swings — you’ll see the same 1530 fps whether you’re hunting Iowa timber in November or Arizona brush in July. The jacketed hollow point construction pairs a gilding metal jacket with a lead core, and the mouth of the cavity sits just behind the ogive to trigger expansion at velocities above 1200 fps. At typical small-game ranges — 25 to 75 yards — this load maintains supersonic velocity and flat trajectory, which translates to minimal holdover and predictable wind drift. Fifty rounds ship in a single box; boxes nest flat for pack carry.
The Numbers
| Spec | Value |
|---|---|
| Caliber | 22 Winchester Magnum Rimfire (WMR) |
| Bullet weight | 50 grains |
| Bullet type | Jacketed Hollow Point |
| Muzzle velocity | 1530 fps |
| Muzzle energy | 260 ft-lbs |
| Rounds/box | 50 |
| Velocity rating | Supersonic |
| Corrosive | Non-corrosive |
| Lead free | No |
| Intended use | Hunting |
| Manufacturer | Federal |
This load sits in the middle of the 22 WMR ammo spectrum — heavier than 30-grain varmint loads, lighter than 40-grain solids meant for penetration on fur. If you’re shopping by rifle, check your chamber and bore specs; some older 22 WMR tubes were cut for 40-grain bullets and may show pressure signs with 50-grain loadings. Federal rates this round for bolt-actions, lever-actions, and semi-autos that meet SAAMI chamber dimensions.
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 muzzle pointed in a safe direction at all times.
- Verify current federal, state, and local laws before purchasing or transporting ammunition across jurisdictions.
- This ammunition contains lead; wash hands after handling, and follow California Proposition 65 guidelines if storing or shooting in California.
Reviews
There are no reviews yet.