Originally Posted By: 2-piper

2nd; Be certain when you load a longer shell into the chamber that its loaded length does not exceed the chamber length. Its fine if a bit of the unfolding crimp reaches up into the forcing cone. It is "Not Fine" if the crimped end of the shell is actually forced into the cone. This increases the resistance to the crimp opening which can raise pressures excessively.


2-Piper is absolutely correct. As long as the hull mouth opens somewhere in the forcing cone pressure is not a major factor. However, if it is extending into the bore pressures will spike considerably. If the mouth of a fired long hull is torn off or ragged the hull is probably in the bore.

John McCain is my war hero.