My dies were hornady, and I would NOT recommend them for that caliber. Hornady replaced the extractor and collet once, it still wasn't right. The threads aren't cut well and when necking down the brass, it will strip the collet threads or flatten those on the exstractor. Finally sent mine to be fixed to a machinist listed on 6mmbr site. Dies were $70, plus another $50 fix, plus the neck bushing, $12. They worked fine then, but a better set was about the same cost less the trouble and wait. I used .221fb brass, one pass.