#17 Postby Shane » Tue Jul 05, 2005 9:19 am
If you have a set of standard dies that work well and good but this is why they are cheap. They have less quality contol so you might get a good set or maybe a bad set that prduces a heap of run out or other problems. When a std set of dies resize a fired case the die will crush the neck back approx 10-15 thou the expander ball then drags the neck back maybe 5-10 thou on its way back out. this work the brass a lot and streches the case and shortens neck life. Dies like redding and others similar only size down the neck a few thou depending on the chamber size. A neck turned case in a tight chamber will usually only moved a neck about 4 thou on average. most dies like this are set to give about 2 thou crush fit on a proj. so may set them to be 1 thou or 3 thou, whatever works best. But a neck that is varying in wall thickness will give problems with any die setup.
good shooting
Shane