The RCBS 3-Die Roll Crimp Set, Group C (brand part no. 24104), is built for handloaders working with the straight-walled .458 Lott cartridge, a caliber that demands a firm roll crimp to control pressure with heavy-for-caliber bullets. The set includes a steel sizer die that sizes the case and removes the spent primer, an expander die that flares the case mouth to the correct diameter for bullet seating, and a seater die that seats the bullet and applies the roll crimp in the same step. Cases need to be lubricated before sizing, standard practice for a straight-wall rifle cartridge like this one.

Key Specifications

• Built for the straight-walled .458 Lott rifle cartridge.
• Includes a steel sizer die that resizes the case and removes the spent primer.
• Includes an expander die that flares the case mouth to the correct bullet diameter.
• Includes a seater die that seats the bullet and applies a roll crimp in one step.
• Designed for use on a single-stage press.

Frequently Asked Questions

Do I need to lubricate cases before sizing? Yes, cases must be lubricated before running them through the steel sizer die, standard practice to prevent a stuck case.

Why does .458 Lott need a roll crimp instead of a taper crimp? A roll crimp holds heavy dangerous-game bullets firmly against high-pressure, high-recoil loads better than a taper crimp does in a straight-walled rifle case.

Buy the RCBS 3-Die Roll Crimp Set, Group C, .458 Lott

Big-bore dangerous-game ammunition deserves dies built for the pressures involved, and this RCBS set is sized for exactly that job. Order it from our RCBS lineup in our reloading dies selection, and our Lubbock, Texas team can help you complete your .458 Lott reloading setup.