WOW ! Is the recoil really that bad with them or was it just a really soft mount? There is some definite deformation showing for sure.
I know on heavy kicking guns I always try to find a steel mount, but it's not always possible with all that's out there nowadays, to much aluminum stuff IMO, and I still look for steel rings and mounts whenever possible.
The .0020 off the lands, depth, seems to be the load for sure, nice groups. Awful hard to find a place to shoot at those ranges around here now, at least close by it is. Ya, you can still zing one out across the South Forty, but far from a formal range where you can get serious about getting a gun set up for extreme accuracy.
I still haven't gotten the chance to do any long range stuff with the Mauser I got from Bellson yet, 250 is about the longest so far. After a long break-in period it's cutting the same hole @ 100 now. What ever brand that barrel is, it took at least 5-6 box's through it to even start getting any good consistency with it. Once I did,, it's a tack driver at those ranges, after several box's through it now. I can't wait for a good long range work out to see what she'll do. I do expect good things though from what I've seen so far with it.
The Ruger .308 stainless target rifle I have took forever to break in too, seems to be the norm for those bull barrel stainless guns and barrels it seems.
Have you ever tried those barrel burnishing rounds jrs ? I've often wondered about them but haven't tried them yet, have you? Or anyone else tried them? I've got another project sitting in the wings that will have a stainless barrel and was wanting to cut down on break in. I've never really heard anyone mention them here before and was just wondering about them. A couple old timers have told me to put a small dash of valve grinding compound on the first 2-3 rounds and that will do a good job in removing any small machining flaws. Then follow it up with 2-3 with a dash of course auto buffing compound. Don't know if it works or not, but some swear by it, anyone tried it? I do polish my barrels some with compound but just with a hand rod and jag.
I had a Ruger 10/22 target that shot like shit till I got at least a brick and a half through it, and I damn near moved it down the road it shot so bad, but now it's shooting penney's at 100 is child's play ,,,once it FINALLY broke in. I almost gave up on it,,1 1/2 groups were about the best I could get with it at first. I can't tell if the manufactures are just whipping them out fast with out a good final polishing or what. Not sure, but it sure seems that the last few barrels and guns I've gotten with stainless bull barrels,all seem to have taken a lot longer time to break in than in the past.
Any one else noticed this, or is it just me, taking longer to settle into a good shooting stance with a new gun now that I'm older and decrepit ? I don't know, it seems that every new rifle I've gotten lately seems to take longer to break in and to shoot consistently than in the past.