Ok so to set the tone, I have a new set of CH4D 9mm dies and a Rockchucker at the moment (Waiting impatiently for my Walnut Hill press...like a 7 year old on December 24th). I could not wait any longer so I wanted to try and set it up on the Rockchucker to start getting the feel for everything. I am using RCE .660" .355 jackets and lee .32 caliber 93 grain bullet (closer to 100 grain as its pure lead). We had a bonfire Friday night so I annealed some of the cases (and gave them a citric acid tumble and dried them in the oven today). Started reading the instructions and thought I had the core seat die set up but the core seat die is almost the exact same diameter (within 1/2 a thousandth or so) of the jacket. Long story short, the jacket crushed.
So is the core seating die punch supposed to fit inside the upside down jacket?
If it is supposed to fit inside the jacket, can I just polish a few thousandths off the punch?
Do I need the core seat operation if I do place the lead in the jacket and melt it in a dutch oven (this is more of a curiosity thing)?
The goal for this die set up ideally will be ~124 grain hollow point bullet. Any help is greatly appreciated!