Barnes Bullets Spit Fire MZ 50 Black Powder Spit-Fire MZ 245 GR 24. Barnes? Expander MZ? Muzzleloader Bullets produce more consistent shot-to-shot velocities and better accuracy than competing bullets deliver. The result? Greater shooter confidence and more one-shot kills. Expander MZ bullets deliver deadly performance at both high and low velocities. Expand to twice their original diameter creating six razor-sharp copper petals that slice through game. No fragmentation?these tough deep-driving bullets typically retain 100 percent of their original weight. 100 percent Copper Exceptional Accuracy Full weight Retention Razor Sharp Cutting Edges Double-Diameter Expansion Deep Penetration Effective at High and Low Velocities No Fragmentation Recommended for In-Line Rifles Specifications for Barnes Bullets 30574 Spit Fire MZ 50 Black Powder Spit-Fire MZ 245 GR 24: Manufacturer: Barnes Bullet Type: Black Powder Projectile Caliber: .50 Caliber Bullet Weight: 245 grain Package Contents: Barnes Bullets 30574 Spit Fire MZ 50 Black Powder Spit-Fire MZ 245 GR 24 Barnes Bullets 30574 Spit Fire MZ 50 Black Powder Spit-Fire MZ 245 GR 24