The Hornady Critical Defense Rimfire Ammo 22 Mag 45 gr Flex Tip eXpanding brings shooters a reliable self-defense and varmint-control option from Hornadys Critical Defense series, combining a 45 grain Flex Tip eXpanding (FTX) bullet designed for dependable controlled expansion with a 1000 fps muzzle velocity and roughly 100 ft?lbs of energy for consistent terminal performance from compact platforms chambered in .22 WMR. If youre carrying a pocket or compact rifle for close-range defensive scenarios or dialing in a hunting load for small predators and nuisance animals, the lead core and polymer FTX insert promote reliable expansion through light barriers while the low?flash, clean?burning powder supports manageable noise and reduces fouling for easier maintenance between range sessions. Note that due to supply conditions Hornady temporarily suspended nickel plating on their Critical Defense cases; this cosmetic change does not affect ballistics or reliability and Hornady has indicated they will review plating in the future. The series reputation for accuracy and consistent cycling makes this load a solid choice for range practice, self-defense training, and field use where predictable expansion and dependable feeding matter.