Bullet tension

[Kurt]

Jim,

Most of my chambers are cut with my reamers and most of the chambers will be too tight for a GG bullet. My Shiloh's or a couple others that have a GG diameter neck wall and I use a bore diameter PP I use a taper crimp die and it is set with the amount of neck tension I want holding the bullet just snug enough that I can lift the shell with enough tension on the bullet. But this you need to trim your cases so you hold a uniform neck tension.
With a slight taper crimp it will not damage the patched bullet on release. Not that I can detect looking at recovered bullets.
Most of the damage to the patch comes from the 45º case stop at the chamber end especially using very thin paper that two wraps is less than groove depth. I did a lot of snow pile digging to see the effects what is going on using different paper or the crimp effects.
The chamber end transition does the most damage on the bullets shank.
Even then it might not show up on the target in the long run.