Pete, Thanks for the good idea. I actually don't have any good tools to measure the bore diameter, though I am at the point in my collecting where I should invest in some(and I will). That makes sense if the bores are undersized it would recoil more.
Frank, I shoot up at Addieville a few times a year though I do most of my shooting at Peace Deale Shooting Preserve in South Kingstown, RI. I was actually gong to see if there might be any interest in a shoot there in March. I'll post something about that in a different thread.
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