Expander MZ
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.

100% 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
Purchase Now
45 Caliber
| Diameter |
Weight |
Description |
S.D. |
B.C. |
Cat. # |
| .400 |
195 gr. |
Expander MZ |
.174 |
.176 |
40019 |
50 Caliber
| Diameter |
Weight |
Description |
S.D. |
B.C. |
Cat. # |
| .451 |
250 gr. |
Expander MZ |
.176 |
.189 |
45125 |
| .451 |
300 gr. |
Expander MZ |
.211 |
.207 |
45130 |
54 Caliber
| Diameter |
Weight |
Description |
S.D. |
B.C. |
Cat. # |
| .500 |
275 gr. |
Expander MZ |
.157 |
.184 |
50027 |
| .500 |
325 gr. |
Expander MZ |
.186 |
.204 |
50032 |