I figured I'd defer to the experts here who have a lot more reloading experience than I do.
I've been reloading some 9mm and about 35% of the completed cartridges won't go all the way in my Dillon gauge. They stick out a bit. All seem to chrono just fine. If I run the rounds back into the seat/crimp die I can get them to pass the gauge eventually. Some of these rounds take 1 run back up in the press and some take 3. Initially I thought this is due to "belling" or expanding the case mouth too much but I'm not so sure. I've been consistent with the components. Same cases, primers, powder, projectiles etc. Everything chambers 100% and accuracy is great at 21ft from a rest.
I'm open to any thoughts or ideas. I have another 30 or so pre prepped cases (sized, expanded & primed). I figure I'll run through those and then adjust the expanding die on the next run.
RCBS Carbide dies if that matters.