Fair enough. I think the lead / rifling junction on mine is actually tapered rifling. With sst's I get maybe one flyer out to an moa from the group sometimes and I suspect it is an ogive variance issue. So I am wondering whether to jam in further, but worried about a "long one" actually creating a more severe pressure spike. The issue seems much less apparent with sierras; but with a taper into the full lands, some jam is probably a good idea with sierras. Maybe not so good with less consistent bullet shapes.
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