ive been thinking about my boresighter since this thread started. For me I never bought a boresighter because i want to shoot more not less. I would rather shoot 20 rounds or whatever at the range than have a bore sighter ruin the fun and i only get to shoot a couple. I got the boresighter to align the scope while bedding the scope to the rings. Since then though ive decided im not sticking a boresighter arbor in any of my bores cause of the chance of damage. For you its simple do like ledd says and lapp the rings and see how you come out. if that doesnt work shim one of the ring bases.
if that works you can alter the ring base to fix it. i havent read this whole thread so this assumes your scope is ok.
PS you could have bought my bushnell pro boresighter cheaper than wat you paid. Ill save it for when i get in the nursing home and i can boresight my cane on the nurses
My original installation was with lapped rings, as I always do. I swapped the rings front to back with no change in point of aim as shown by the boresighter. I put another set of rings on and the point of aim was nominally still the same. I put another scope on and that also changed nothing, so the problem either lies in the bases (I don't have a set of bases yet to swap on), the base holes, the barrel, the machined barrel shank, the threaded barrel hole in the receiver, the receiver face, or maybe some combination of those.
I would rather shoot more than less, too. When I went to the range with this rifle and barely got on paper, I did not get to shoot as much as I would have if I did not have problems. I also shoot at 1000 yards, so using a boresighter to check for what my zero should fall at on a new rifle is s big help. If I can eliminate some issues before getting to the range, I am for that. Using one for 1000 yd. shooting (as well as other ranges, but less so) is a big help in being safe, as we can't afford shots going out of club property.
If I had not bought the boresighter, I am sure that I would not have easily nor accurately discovered the continuing sighting issues and would have made multiple unsuccessful trips to the range.
I took Fred Bohl's advice and bought the boresighter, and I am now even more glad that I had after using it, as it has other uses. Fred Bohl has been helping me with use of this, and I do not doubt his claims, not that I ever did to start out. He knows how to really use these things to their maximum capability, and I am happy and lucky that he has been kind and patient enough to pass his experience and knowledge on to me.
As far as having maybe having been able to buy your unit for less, well, I never out a WTB in the classifieds, nor asked in topic if anyone wanted to sell theirs, and you did not state that you would want to sell yours, so a transaction never came about, and that is ok. I have one now, and that is what is important

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Danny