This is what I’m getting at. You keep alluding to minimal shoulder numb being “proper”, or “better”. Maybe it is “better” for one aspect, but it isn’t better for feed and function no matter what. That is why I responded at all, and why I keep doing so; there is a cost for minimal shoulder bump sizing- it isn’t “free”.
Properly setup for what? Without question, setting up the die for minimal shoulder bump is not proper if your goal is max probability that a round will chamber and fire in all conditions.
Which do you think will have an issue first in adverse conditions?
1) Ammo that is tighter in the chamber with less room?
Or
2) Ammo that is looser in the chamber, but still safe with more room?
Again- I’m not saying not to do it. I’m not saying it doesn’t offer something. I am saying that there is a price to it- there is a price to everything. And when we write, say, or do things we should recognize and acknowledge the potential cost of it.
“Form” isn’t having this back and forth on minimally bumping shoulders in reloads because he’s lazy, or because he’s never done it. He’s probably having it- because he sees 200,000 to 300,000 rounds a year fired in all conditions- and sees what fails and what causes those failures.