LIH, I have a set of Weaver 30mm superhigh rings on a 204Ruger and I don't recommend them, and I have a 1" set on a 7mm08 barrel but I don't recall what brand they are but I like them. The Weaver brand rings are steel, as that is all I use, but the female threads that accept the screws that hold the rings on the base stripped out very easily and I had to go the hardware store and buy longer screws and decorative nuts to fix this. These are both Weaver style. Sorry I can't be more help.