RCBS Supreme Die Set Features The RCBS Supreme Die Set bundles a Full Length resizing and seating die set together with a matched shell holder removing the guesswork of sourcing a compatible holder separately. Because the dies are full length rather than neck only they resize cases fully for reliable chambering across different rifles firing the same cartridge. The included Chamber Case Length Gauge lets handloaders quickly check trim length to keep cases within safe specifications. Together these four components give a reloader a complete starting kit for producing consistent safe .308 Win ammunition. Offered as one of RCBS s most popular rifle die set configurations the Supreme Die Set reflects decades of reloading equipment experience behind the RCBS name. Having the shell holder and case gauge included in one box saves a reloader from piecing together compatible accessories from multiple sources. This convenience makes the Supreme Die Set an efficient option for both newer reloaders setting up their first press for .308 Win and experienced handloaders adding another caliber to their bench. The set is built to standard 7/8 inch 14 thread dies fitting most popular single stage and turret presses on the market. RCBS Supreme Die Set Specifications Manufacturer: RCBS Model: Supreme Die Set Caliber: .308 Win Die Type: Full Length Gun Type: Rifle Pieces in Set: 4 Available At: GrabAGun