As I indicated above, I've seen barrels in a bore scope that looked like a beaver reamed them - and they could shoot well. If someone is worried about reamer or button rifling marks before they've shot a barrel, well then, I don't think they're terribly worried about air gaging the barrel - or shooting to less than a minute.
Someone asked about reamer marks, I told them how to get rid of reamer marks.
If they wanted to not have reamer marks and they wanted the barrel to shoot to maximal accuracy, then they should have had their priorities in a different order.
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