Barnes Expander MZ 54 Caliber 325gr Muzzleloader Ammunition

Barnes’ Expander MZ line brings proven X-Bullet technology to muzzleloader hunting. Constructed entirely from copper with a large hollow cavity, these 54 caliber, 325 grain projectiles are engineered for rapid, consistent expansion. The design produces more uniform shot-to-shot velocities and improved accuracy, supporting confident placement and ethical one-shot kills. Expander MZ bullets perform reliably across both high and low velocity ranges. Built tough for deep penetration, they typically retain 100 percent of their original weight while expanding to twice their original diameter, forming six razor-sharp copper petals that cut through game.