I "bump" every time!
I load a bit on the warm side and expect the brass to fill the chamber…..maybe it will or maybe it won't shrink back consistently. If nothing else….after the bump……the brass is all consistent.
And, my rifle is a "hunting rifle"! Years ago, I had rounds that I found to be tight to chamber while hunting…..don't want that again!
At that time I was just "kissing" the shoulder…..now they get the "bump"!
I'm also not shooting at the distances that some of you shoot, plus I'm satisfied with my 1/2" to 3/4" groups @ 100. Grouping, or lack thereof, and my lack of skills limit my shooting at game to within my "time zone"! memtb