The RCBS X-Die Full Length Die Set for .308 Winchester (RCBS part no. 37812) solves one of the more tedious parts of high-volume reloading: repeated case trimming. After the first trim removes 0.02 inches off the maximum case length, the die’s built-in mandrel contacts the case mouth during every subsequent sizing cycle and cuts down the growth rate, which means far less trimming going forward. Because the mandrel maintains an extremely close tolerance to the neck wall as the case is pushed back, there is no added neck-wall thickening either, a common side effect with conventional dies. For .308 Win reloaders running large batches through a press, that combination saves real time at the bench.

Key Specifications

• Features an integrated mandrel that reduces case growth after the first trim.
• Maintains extremely close neck-wall tolerance to prevent neck-wall thickening.
• Cuts 0.02 inches off maximum case length on the initial trim.
• Built specifically for the .308 Winchester cartridge.
• Weighs 1.25 pounds as a complete full-length die set.

Frequently Asked Questions

How does the X-Die reduce trimming? After the first trim, the built-in mandrel contacts the case mouth during sizing and slows the rate of case growth, reducing how often you need to trim.

Does this die thicken the case neck? No, the close tolerance between the mandrel and neck wall prevents the neck-wall thickening common with conventional dies.

Is this set caliber-specific? Yes, this full length die set is built specifically for .308 Winchester.

Buy the RCBS X-Die Full Length Die Set, .308 Win

Order this set from RCBS in our gunsmithing tools lineup and cut down your trimming time at the bench. Order it from our Lubbock, Texas gun shop for fast, insured shipping.