Originally Posted by
markm
Sometimes. But at that point it's lucky it hasn't already let go. I've roasted a TON of .308 brass in my bolt gun by sizing it to the case guage instead of the chamber. :p Lesson learned.
For gas gun the gauge is the way to go.
I forget... Like .003"-.005" plus and you're damaging the case I think... There's a paper clip trick you can do to feel the case starting to separate on the inside, before you see it on the outside... but I've never been able to get that to work. :confused: