What to do about this crown?

[Peter Laidler]

I certainly woiuldn't be lapping the barrel. Don't forget, lapping the barrel is just another or polite way of removing some of the bore material. Additionally it's a good way of rounding the remaining edges of the rifling. The days of lots and lots of gauges are well past. If a snioper rifle passes the EMER accuracy test and the plug bore gauge runs, then the barrel is serviceable

[browningautorifle]

If a sniper rifle passes the EMER accuracy test and the plug bore gauge runs, then the barrel is serviceable

You once pointed out that some beauty barrels wouldn't shoot shyte and some shyte barrels shot tiny clean groups.