Yep I am confused about this "when you size beyond the seated bullet bearing, you cause unexpanded neck to bind the bullet's bearing-base junction. This is not tension, it's binding.Are you replying to the wrong thread perhaps?
Nothing about my post relates to or counters your understanding of bushing neck sizing.
Nobody in this thread has implied higher pressures from bushing neck sizing.
So yes, you are confused
In this scenario you're also bringing donut thickness (which is inconsistent) into play, for inconsistent tension. I'm trying to learn and understand exactly what is going on here. You have to ask questions about things in order to better understand them. please educate me here thanks