Thanks for the replies so far, gentlemen.

Re.seating the bullet out further, the cartridge OAL is already a hair above max; any further lengthening and the cartridges wouldn't fit in the magazine.

I'm not talking about headspace or freebore, I'm talking about bullet jump, which is the word Stoney Point uses to describe the term. Headspace is not a problem, since the round seats firmly against the shoulder of the chamber.

I've tried two loads: My reloads that always shot well in the previous factory barrel, plus some factory Winchesters. Both shoot poorly.

If the crown is bad on a new barrel, then I assume it's the gunsmiths problem and something he should fix.

Keep the comments coming, guys!