I don’t shoot heavy recoilers. I do A couple of .308 Win and a .270.
I put the bases and bottom halves of the rings on. Put the rear top half ring on and tighten 15 inch/lbs.
If scope touches bottom half of front ring, I remove the back top half ring and put on the front top half and tighten it.
If there is a discrepancy in height I measure it with a feeler gauge and apply shims of that thickness Under the Required base.
I use later lock tire 242 and tighten the base screws with it.
