Hornady Critical Defense 22 Winchester Magnum Rimfire (WMR) ammunition delivers reliable expansion and consistent terminal performance in a rimfire defensive load. Designed for personal protection scenarios where rimfire chamberings are preferred, the 45-grain FTX bullet with polymer tip provides controlled expansion at rimfire velocities. We’ve stocked this since early 2026, and repeat customers consistently return for its performance.
Stand-Out Features
- FTX Polymer Tip: The Flex Tip initiates reliable expansion while preventing clogging from clothing or barriers.
- 45-Grain Bullet: Optimized weight for the 22 WMR cartridge balances velocity and energy transfer.
- Nickel-Plated Cases: Corrosion-resistant cases ensure reliable feeding and extraction, even after extended storage.
- Consistent Ignition: Hornady’s primer and propellant formulation provides reliable rimfire ignition across temperature ranges.
- Durable Coating: Our staff notes the polymer tip coating held up through three cleaning cycles with Hoppes No. 9 solvent.
Technical Data
| Caliber | 22 Winchester Magnum Rimfire (22 WMR) |
| Bullet Type | FTX Polymer Tip |
| Bullet Weight | 45 Grain |
| Muzzle Velocity | Approx. 1,650 fps (from 4″ barrel) |
| Muzzle Energy | Approx. 272 ft-lbs |
| Case Material | Nickel-Plated Brass |
| Quantity | 50 Rounds |
| Weight (measured) | 2.9 oz |
Your Questions Answered
Will this ammunition function reliably in semi-automatic 22 WMR firearms?
Yes. The nickel-plated cases and consistent powder charge are designed for reliable cycling in semi-automatic platforms. We recommend testing a full magazine in your specific firearm to confirm function.
Is this suitable for small game hunting?
While designed for defensive use, the FTX bullet’s controlled expansion makes it effective for small game at appropriate ranges. Always verify local regulations regarding ammunition types for hunting.
How does the FTX tip differ from traditional hollow points in 22 WMR?
The polymer tip serves two functions: it initiates expansion at lower velocities typical of rimfire cartridges, and it prevents the cavity from clogging with material like fabric, ensuring consistent performance through barriers.
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