Dean, what is "pinched"? Since Sherman Bell indicated a very small increase in pressure when long shells are shot in short chambers, the appearance of the empty coming out of the chamber should be of less importance than the actual pressure of the load. The thickness of the plastic is less than the difference in the dimensions of various bores and forcing cone areas of different guns, so why worry about another quarter of an inch of this thin plastic encroaching on the first quarter of an inch of forcing cone. The first quarter inch of the forcing cone is about the same diameter as the chamber anyway, the bore diameter still a bit forward of the lip of the shell.
Last edited by Bill Murphy; 02-16-2010 at 08:34 AM..
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