The RCBS Carbide Sizer Die, .38 Special/.357 Magnum (brand part no. 18237) resizes fired .38 Special/.357 Magnum brass back to spec on a single-stage or turret press. It ships as part of RCBS’s Carbide 3-Die Set but works fully on its own if you already own the expander and seater dies and just need a replacement or second sizer. A diamond-lapped tungsten-carbide ring lines the die’s interior, smooth enough that cases size and de-prime in one stroke without any case lubricant, which saves a full step in the reloading process compared to a steel sizing die. It is a straightforward, durable upgrade for anyone loading high volumes of .38 Special/.357 Magnum pistol ammunition.

Key Specifications

• Diamond-lapped tungsten-carbide ring sizes cases smoothly enough that no case lubricant is required, unlike a plain steel sizing die.
• Combined sizing and de-priming resizes the case and knocks out the spent primer in a single stroke.
• Chambered for .38 Special/.357 Magnum sized to this cartridge’s exact case dimensions for consistent resizing.
• Standard 7/8-14 die thread fits any single-stage, turret, or progressive press using the industry-standard thread.

Frequently Asked Questions

Do I need case lube with this die? No. The carbide ring is smooth enough that cases size and de-prime without lubricant, unlike a standard steel sizing die.

Can I buy this die by itself if I already have the rest of the set? Yes, this sizer die is sold individually and works with the other dies from RCBS’s Carbide 3-Die Set for .38 Special/.357 Magnum.

Buy the RCBS Carbide Sizer Die, .38 Special/.357 Magnum

Order the RCBS Carbide Sizer Die, .38 Special/.357 Magnum from RCBS and skip the case-lube step on your next .38 Special/.357 Magnum reloading session. Pick it up from our Lubbock, Texas gun shop. Browse our reloading dies lineup for more.