The RCBS 3-Die Roll Crimp Set (Group E), .38-40 Win (brand part no. 35605) gives straight-wall .38-40 Win handloaders the three dedicated dies that cartridge needs for a complete reload. The steel Sizer Die sizes the case and de-primes it in one stroke (cases must be lubricated first), the Expander Die opens the case mouth to the correct diameter and imparts the flare that lets a bullet feed in straight, and the Seater Die both seats the bullet and rolls a proper crimp to finish the round. It’s the Group E die set RCBS specifies for .38-40 Win and similar straight-wall cartridges.

Key Specifications

• Built for straight-wall .38-40 Win brass in RCBS’s Group E die classification.
• Steel Sizer Die sizes the case and de-primes it (cases require lubrication first).
• Expander Die opens the case mouth to proper bullet diameter and adds case-mouth flare.
• Seater Die seats the bullet and rolls a finishing crimp in the same step.
• Ships at 1.4063 lb for the complete three-die set.

Frequently Asked Questions

Why does this cartridge need three dies? Straight-wall cases like .38-40 Win can’t be full-length resized and expanded in a single operation, so a separate expander die is required alongside the sizer and seater.

Do I need to lubricate cases before sizing? Yes, cases must be lubricated before running them through the steel Sizer Die.

Is this set specific to .38-40 Win? Yes, all three dies are machined for .38-40 Win brass.

Buy the RCBS 3-Die Roll Crimp Set (Group E), .38-40 Win

Straight-wall cartridges demand the right three-die process, and this Group E set gives .38-40 Win handloaders sizing, expanding, and roll-crimp seating from a single trusted manufacturer. Order it from our Lubbock, Texas gun shop for fast, insured shipping. Order it through RCBS‘s reloading dies lineup and load consistent .38-40 Win ammunition from start to finish.