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Barnes Expander Mz Bullets - 54 Caliber (0.500'''') 275gr Expander Mz Flat Base 24/Box
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SKU: 749065020
Overview
Built for muzzleloader hunters who want a controlled-expansion bullet for game use, this 54 caliber Barnes option is designed around a large hollow cavity and an all-copper construction. It is intended to deliver consistent shot-to-shot velocities and accurate performance, with expansion described as effective at both high and low velocities. The bullet is presented as a deep-driving design that expands to twice its original diameter and forms six copper petals, while typically retaining its full weight. For hunters prioritizing dependable terminal behavior from a muzzleloader setup, it offers a focused, purpose-driven choice.
Why Hunters Choose the Barnes Bullets
100% Copper
Construction for the muzzleloader version
Large Hollow
Cavity is designed for quick,
Built Deliver
More consistent shot-to-shot velocities
Listed Exceptional
Exceptional accuracy in the product
Designed Expand
Six copper petals
Key Features
- Barnes Expander MZ muzzleloader bullets are 100 percent copper.
- Large hollow cavity is designed for quick, sure expansion.
- Built to produce more consistent shot-to-shot velocities.
- Designed for accuracy in muzzleloader applications.
- Expands to twice original diameter, forming six copper petals.
- No fragmentation; bullets typically retain 100 percent of original weight.
Best Used For
- Muzzleloader hunters wanting a 54 caliber, 275-grain bullet for dedicated hunting loads
- Shooters seeking a copper muzzleloader bullet with a large hollow cavity for expansion
- Hunters who prioritize consistent shot-to-shot velocities and accuracy in their load development
- Those needing a deep-driving bullet designed to expand at both high and low velocities
- Hunters using Barnes muzzleloader components and looking for 24 bullets per box
Specifications
| Accuracy Claim | Exceptional Accuracy |
|---|---|
| Bullet Type | Expander Mz Flat Base |
| Bullet Weight | 275gr |
| Caliber | 54 Caliber (0.500'''') |
| Design | Six copper petals |
| Expansion | Large, hollow cavity |
| Material | 100% Copper |
| Quantity | 24/Box |
| Shot To Shot Velocity Claim | More consistent shot-to-shot velocities |
| Velocity Range | High and low velocities |
| Weight Retention | Typically retain 100% of original weight |
Pros
- 100% copper construction for the muzzleloader version of Barnes' X-Bullet design
- Large hollow cavity is designed for quick, sure expansion
- Built to deliver more consistent shot-to-shot velocities
- Listed with exceptional accuracy in the product description
- Designed to expand to twice its original diameter with six copper petals
- No fragmentation is stated, with bullets typically retaining 100% of original weight
Considerations & Trade-offs
- Designed for muzzleloader use only, so it is not a general-purpose bullet option for other firearm types.
- The large hollow cavity and expansion-focused design are intended for quick expansion, which may be less suitable for hunters prioritizing minimal tissue disruption.
- At 275 grains, load development and compatibility should be verified with the specific muzzleloader and shooting setup before use.
- The 24-count box is practical for sight-in and hunting, but it is a relatively small quantity for extensive practice sessions.
Suggested Comparisons
- Muzzleloader bullets
- Copper hunting bullets
- Expanding projectiles
- Black powder hunting ammunition
Suggested Accessories
- Powder measure
- Muzzleloader cleaning supplies
- Bullet starter
- Primers
Frequently Asked Questions
What caliber and bullet weight is this Barnes Expander MZ load intended for?
It is listed as a 54 caliber (.500") bullet in 275 grain weight, sold in a 24-count box.
What is the bullet made of?
The source states it is 100% copper.
Is this bullet designed for muzzleloaders?
Yes. The description identifies it as the muzzleloader version of the X-Bullet and names it an Expander MZ muzzleloader bullet.
What kind of expansion does Barnes describe for this bullet?
Barnes says it has a large hollow cavity for quick, sure expansion and can expand to twice its original diameter, forming six copper petals.
Does the product description mention any performance trade-offs or limitations?
The source emphasizes expansion and weight retention, but it does not provide independent test data, specific velocity figures, or detailed limitations beyond noting it is a muzzleloader bullet.