So, speaking of bad forcing cones on Ladysmiths...
It's not just a question of cracked cones, in comparing the forcing cone of one gun to a factory-new barrel, it's plain to see that the cone area on the old barrel is belled-out a fair bit. So much in fact that the frame engraved some threads on the barrel stub during removal. It might have been even bigger before come to that, but when removed and measured it was about .015" larger in diameter than the new barrel. Even under a 50X microscope there are no visible cracks, it's just been peened out from high-power ammunition.
Bet you found the source of your accuracy issue.
