November 07, 2009
This muzzleloader version of the X-Bullet is 100 percent copper with a large, hollow cavity for quick, sure expansion. 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.

| Diameter | Weight | Description | S.D. | B.C. | Cat. # |
| .400 | 195 gr. | .174 | .176 | 40019 |
50 Caliber
| Diameter | Weight | Description | S.D. | B.C. | Cat. # |
| .451 | 250 gr. | .176 | .189 | 45125 | |
| .451 | 300 gr. | .211 | .207 | 45130 |
54 Caliber
| Diameter | Weight | Description | S.D. | B.C. | Cat. # |
| .500 | 275 gr. | .157 | .184 | 50027 | |
| .500 | 325 gr. | .186 | .204 | 50032 |