Here is what I meant by "the beginnings of pressure signs"
This will be a comparison so follow me.
We all know that 10mm factory loads are relatively light so the firing pin and firing pin hole "artifiacts" are rather lightly impressed compaired to the same artifacts on most spent 9mm, 40 cal, 357 sig, 45 acp, factory loaded cases. The artifacts left on the primer of my reloads looks more like what you would see in other caliber factory cases fired in Glocks than normal factory 10mm fired in a Glock.
Hopefully that makes sense.
Also what little case bulge there is looks a lot like what you would normally see in other calibers fired in glocks as well. Ie a little bit of a bulge on the side of the case where the extractor pushed it away from the chamber wall. And no significant bulge in the feed ramp area.
Maybe saying "the beginnings of pressure signs" painted the wrong picture. Compaired to anemic factory ammo yes these reloads show signs of more pressure but compaired to any other caliber I have ever seen shot in a Glock the brass looks totally normal by comparison.