RCBS 20904 Roll Crimp 3-Die Set Group C for .45-70 Government Reloading

The RCBS 20904 Roll Crimp 3-Die Set Group C is purpose-built for reloading .45-70 Government, the classic straight-wall cartridge favored by hunters pursuing big game with lever-action rifles and single-shots. This three-die set gives you everything needed to process brass and assemble reliable ammunition for one of America's most storied hunting rounds. If you're working up loads for a Marlin, Winchester, or Sharps rifle, a dedicated .45-70 die set ensures proper sizing, bullet seating, and crimp — all critical for consistent performance in lever guns.

The set includes a full-length sizer die that resizes the case body and removes the spent primer, a separate expander die that opens the case mouth to accept your bullet and creates the slight flare needed for smooth feeding, and a seater die that seats the bullet and applies a roll crimp to lock it in place. The roll crimp is essential for .45-70 loads, especially in lever-action rifles where recoil and magazine handling demand a tight, secure crimp. Steel construction throughout ensures durability through thousands of reloading cycles. Remember that straight-wall cases like .45-70 brass require lubrication before sizing — don't skip that step.

Whether you're a .45-70 devotee fine-tuning loads for your favorite lever gun or a hunter looking to reload accurate, cost-effective ammo for dangerous game, this RCBS die set delivers the precision and reliability the caliber demands. It's a straightforward, proven approach to .45-70 ammunition assembly.

Key Features

• Three-die set sized specifically for .45-70 Government straight-wall cartridges
• Full-length sizer die with integrated primer removal
• Expander die creates proper case mouth flare for reliable bullet feeding
• Roll crimp seater die locks bullet in place for lever-action reliability
• Steel construction for long service life

Specifications

Frequently Asked Questions

What's included in the RCBS Group C .45-70 reloading die set?

The set includes three dies: a full-length sizer die (which also de-primes), an expander die, and a roll crimp seater die. Everything you need to size, prepare, and seat bullets in .45-70 brass.

Is this set suitable for lever-action .45-70 rifles?

Yes. The roll crimp is especially valuable for lever guns, where the crimp helps secure the bullet against recoil and feeding stresses in the magazine and action. This is the right choice for rifles like the Marlin 1895 or Winchester 1886.

Do I need to lubricate .45-70 brass before sizing?

Yes. Straight-wall cases like .45-70 require case lube before running them through the sizer die. Omitting this step risks stuck cases and damage to your die or press.

Can I use this die set for other calibers?

No. This set is sized and configured specifically for .45-70 Government. Use only for that cartridge.