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Q&A · Hunting

Do I Need to Change My Reloading Techniques for Copper?

April 5, 2026

Quick Answer

Yes, you need to adjust your reloading techniques when using copper bullets, as they can be more challenging to reload than traditional lead bullets. Copper bullets require specific seating depths and crimping techniques to ensure proper expansion and avoid over-expansion.

Copper Bullet Seating Depth Considerations

When reloading copper bullets, it’s essential to consider the specific seating depth required to achieve optimal performance. As a general rule, copper bullets should be seated to a depth of 0.015-0.020 inches (0.38-0.51 mm) below the rifling groove. This depth allows for proper expansion and helps prevent over-expansion, which can lead to bullet fragmentation.

Reloading Considerations for Copper Bullets

Copper bullets also require careful consideration of the reloading process, particularly when it comes to crimping. A lighter crimp is recommended to avoid over-working the bullet, which can lead to excessive deformation. A good starting point for crimping copper bullets is 10-15% of the cartridge case’s overall length. It’s also crucial to use a crimp die specifically designed for copper bullets to avoid over-working the bullet.

Tips for Handling Copper Bullets

When handling copper bullets, it’s essential to use gloves to prevent oil from your skin from transferring to the bullet. This can lead to corrosion and affect the bullet’s performance. Additionally, copper bullets should be handled and reloaded in a clean, dry environment to prevent contamination and maintain their integrity.

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