Understood. I will add when I removed the rear scope base, there was some gunk underneath that looked like dried oil. A friend mentioned that he felt if the base was indeed the correct profile, there shouldn't have been enough space for oil or anything else to get underneath and he wondered if there was an imperceptible amount of rocking on the base. I know when installed, the action and bases were clean. Could be nothing. Will also take another look at the bore and give an extra good clean in case there is more copper in there than I think. The bullets I was shooting here AccuBonds and TSX's.
