How much "Bell" on case mouth?
No stupid questions, right? Have you ever measured the amount of bell you put on the case mouth when you are setting up your die? I try to shoot for about .006", but sometimes go around .010" just because the dies are so touchy.
For example, with 9mm, the OD at the end of a loaded case is .380". I try to bell my cases between .386" and .390".
Or do you just do it by sight/touch/feel?
9mm Luger Expander from RCBS 2021.
.005" larger then case body. Just buy good dies. RCBS 9MM- "M" Die Expander. https://www.thehighroad.org/index.ph...ting.3604/full