Maybe I’m just tired, been doing a lot of driving today, but none of this makes sense to me. Trying to picture it in my head.
Looking at presses that use a standard shell holder, the holder engages the extractor groove on the case, the ram lifts the case/shell holder up until the bottom of the die contacts the shell holder (this is ignoring weather or not you set the die to cam over).
If the shell holder on the M-press is engaging the extractor groove and the die is adjusted so that it’s making contact with the shell holder with the ram fully lifted, what is or isn’t happening that’s keeping the case from being sized properly? I don’t understand why the shell holder would need to be shimmed up, or the die ground down.
I’m not trying to be an ass about this at all. Like I said, I’m probably just tired, but it doesn’t make sense to me. Please help me understand.