Last reviewed: 2026-04-19 by Jake Terry, FFL07/SOT3, NRA-certified firearms instructor.
Winchester Silvertip Defense 22 WMR ammo delivers proven stopping power for the shooter who trusts rimfire for personal defense. The 22 Winchester Magnum Rimfire cartridge, chambered in compact revolvers and semi-autos, pairs velocity with the Silvertip’s four-petal expansion design to maximize energy transfer. This 40-grain jacketed hollow point load launches at 1240 feet per second with 137 foot-pounds of muzzle energy, optimized for short-barreled defensive firearms. Decades of field use back the Silvertip name — this is not experimental ammo.
Performance at a Glance
The Silvertip bullet splits into four segments on impact, creating wound channels while the bullet base maintains penetration. Winchester tailors the powder charge for barrels as short as two inches, common on rimfire carry guns, so velocity holds consistent across platform types. The jacketed hollow point design resists deformation during feeding, a critical factor in semi-automatic rimfire pistols prone to nose-dive failures with soft-nose bullets.
| Spec | Value |
|---|---|
| Caliber | 22 Winchester Magnum Rimfire (WMR) |
| Bullet weight | 40 grains |
| Bullet type | Jacketed Hollow Point (Silvertip) |
| Muzzle velocity | 1240 fps |
| Muzzle energy | 137 ft-lbs |
| Rounds per box | 50 |
| Intended use | Self-defense |
| Lead-free | No |
| Velocity rating | Supersonic |
| Manufacturer | Winchester |
The 50-round box provides enough capacity to verify function in your carry gun and stock a reserve. This load meets DOT shipping regulations for hazmat; 22 WMR ammo ships via ground carrier only.
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.
- Observe the four rules of gun safety during all handling and range sessions
- This product contains lead; comply with California Proposition 65 warnings and wash hands after handling
- Verify your firearm is chambered for 22 WMR — do not attempt to fire in 22 LR chambers
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