Paper Patching a few more Question

[Kurt]

Klaus.

What I do is I size the case using a taper crimp die that I had CH-4-D make for me that is custom made for my chamber in the rifle. I can size the case neck as far down as I want to have a nice straight cylinder case mouth and not a tapered case mouth and then I use expander I made in one thousands increments from .002" neck tension to just enough to hold the bullet from falling out. Using a crimp, even a taper crimp when the case mouth is several thousands larger than the patched bullet the taper is like a funnel leaving a sharp case mouth and when the charge goes off it will bite into the bullet shank wall and if this happens you will find patch remnants that are cut at the case mouth where the bullet was seated.
Using the taper crimp die to size the case neck down keeps the rest of the unsized case chamber diameter and this helps centering the loose fitting PP bullet better in the throat.
Kurt