interarms

I’m looking for 2 piece mounts that fit my Interarms Mauser action. Probably steel as 300 Win Mag. Holes are, Center to Center .500 in the rear and .850 in front. I’ve found some for Interarms Mark X but the specs on the holes are not the same. Can someone advise?

I picked up a Mauser HSc imported by Interarms back in the late 60's/early 70's for a few hundred at the Wanenmacher show at the end of last year, I was wondering if anyone else on here owns one? Took it to the range a couple times and I've been having serious feeding issues with it. I've...