Quote:
Miller, don't you mean if a hull opens in the bore past the forcing cone? Even Parker wanted the hulls to open partially into the forcing cone.



NO; I meant exactly what I said. The"LOADED" length of the shell should be shorter than the chamber so the crimp can open normally. If the end of the Loaded shell is pushed into the cone the force needed to open the crimp is increased, thus raising the pressure at the initial movement of the shot.
I do definitely agree that no shell should be fired in a barrel with so short a forcing that the hull will open into the bore ahead of it.
This is however I believe a situation which is very rarely encountered, though it can & Has occurred.

Miller/TN
I Didn't Say Everything I Said, Yogi Berra