The Firing Line Forums - View Single Post - Any Rumors for Redding at the 2011 Shot show?

FrankenMauser · January 18, 2011, 02:53 PM

The problem with push-through sizing dies is that most of the cartridges people want them for are not straight-walled cartridges.

With the tapered cases, the die manufacturers have to make one of two compromises:
1. Make the finished size large enough to prevent swaging the base far enough to cause tight primer pockets, but require a second sizing in a proper die for the mouth of the case.
2. Make the finished size small enough not to require a second sizing for the mouth, but risk tightening primer pockets by swaging the base too small.

January 18, 2011, 02:53 PM	#3
FrankenMauser Senior Member Join Date: August 25, 2008 Location: In the valley above the plain Posts: 13,424	The problem with push-through sizing dies is that most of the cartridges people want them for are not straight-walled cartridges. With the tapered cases, the die manufacturers have to make one of two compromises: 1. Make the finished size large enough to prevent swaging the base far enough to cause tight primer pockets, but require a second sizing in a proper die for the mouth of the case. 2. Make the finished size small enough not to require a second sizing for the mouth, but risk tightening primer pockets by swaging the base too small. __________________ Don't even try it. It's even worse than the internet would lead you to believe.