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Old November 28, 2012, 09:36 AM   #7
big al hunter
Senior Member
Join Date: March 12, 2011
Location: Washington state
Posts: 1,048
Ok, after re-reading your post I see what you are wanting to discuss. I don't know how much of a difference there would have to be to cause noticeable group change. If the bore was off center more than a few thousandth of an inch I could see where the difference in expansion might cause stringing. But I would think it would be less than an out of square receiver would cause. I would be curious to see testing that included barrel wall thickness and centering of the bore as a factor.....what do you suppose the factory tolerances are for bore centering.
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