Pro Trim Die 308 Winchester by Lyman now carries the Pro Trim Die 308 Winchester. The Pro Trim Die 308 Winchester are made in the USA to Lyman’s highest quality standards. Made from stainless steel for a lifetime of use. Pro Trim Dies are threaded on the bottom in 7/8-14 to fit all Lyman and Mark 7 and and all other reloading presses on the market. The top thread is 13/16-20 for use with Lyman’s new press mounted trimmer or many of the other popular press mounted trimmers on the market
