I just got one. Case is based on Rem SAUM brass (factory loads I got are marked as such). My .458 SOCOM dies will reload the brass. I obtained two spare bolts for mine - one bolt face I opened to accept .458 SOCOM brass (.308 case head); the other I left stock to use the .50 Beowulf brass (7.62x39 case head) sized and trimmed to .458 SOCOM specs. The open sights yielded 3" groups @50yds w/factory ammo. Since the WASR-10 it is based on has a rail, I've added a side mount and NcStar's 3x9x42IR scope. Range report will follow....