(0) 
Newsletter
Product no.: 749014017
Mfr. No.: 37812
076683378125 Trim the case once—never trim again! The X-Sizer Die looks like a regular Full Length Sizer Die. Inside, the die features a specially designed mandrel with an expander ball and decapping pin attached. The mandrel is what the X-Die® is all about. The patented X-Sizer Die eliminates the need for repeated trimming after an initial trim of .020” off the maximum case length to standardize the case. The X-Die doesn’t shorten the length of the case: the mandrel reduces the growth rate as the case grows as a result of the case mouth-contacting the mandrel during sizing. Because of an extremely close tolerance between the mandrel and die neck wall, the neck wall of the case does not thicken as the case length is pushed back. Cases repeatedly sized in the X-Die will initially grow a few thousandths of an inch, then stabilize below the maximum case length with no discernable loss of accuracy or case life.Backorderable, delivery time approx. 4-12 weeks from the USA warehouse.
The X-FULL LENGTH DIE SET, RCBS X-DIE 2-DIE SET .308 WIN is designed for the discerning reloader who values efficiency and accuracy. With this innovative die set, you can trim your cases just once and never worry about trimming again!
With the RCBS X-DIE 2-DIE SET, you can achieve reliable results without compromising on quality. Perfect for shooters looking to enhance their reloading process!
308 Winchester
Full Length Sizing Dies
They work as advertised ! 11/06/2016
I've used RCBS X-Dies in .308 Win and .223 Rem since they were first introduced; have loaded many 1,000s of rounds with them. These are exceptional in my Dillon progressive press. When still shooting competitive high-power, I used a single stage press and hand-trimmed every match case - but for practice / plinking ammo, the X-Die is all I use in these two high-volume calibers. They REALLY do work well.
Major time saver for hi-volume reloading 11/06/2016
I've used RCBS X-Dies in .223 Rem and .308 Win since they were first introduced; have loaded many 1,000s of rounds with them. These are exceptional in my Dillon 650B progressive press. When still shooting competitive high-power, I still used a single stage press and hand-trimmed every case - but for practice / plinking ammo - the X-Die is all I use in these two high-volume calibers. They REALLY do work well.
We encountered an error while loading this content. Please refresh the page to continue. If the issue persists, contact our customer support.
to Brownells UK, your destination for anything gun related. With our roots in a genuine passion for firearms, we bring you an unmatched selection of Gun Parts, Firearm Accessories, Gunsmithing Tools, Scopes & Red Dot Sights and Expert Knowledge.
Whether you're looking to maintain, repair, or upgrade, we've got what you need!
For Shooters, By Shooters
We share your enthusiasm and know exactly what you're looking for because we're part of the community.
Massive Selection
From the essentials to the unique, find everything under one roof.
Our blend of tradition and innovation
Shop with the convenience of modern technology, backed by a legacy of experience.
Browse our collection and discover why we're the trusted name in shooting sports & hunting.
© 2025 Brownells UK
Part of the Brownells Europe Group
Classical view
Mobile view
Help and contact
