I have one VZ24 action left. Commercial bolt handle welded on, D/T'd for sights AND scope, cleaned up and ready to go. I've saved it for a 358 W for cast bullets and I don't have the budget to accommodate the project just yet, but you're making it very hard to resist.
I'm getting that you ran the reamer via the drill press motor. I was envisioning you hand-turning the chuck.
I may be stupid, but I have to ask - did you simply close the mould blocks around the spinning reamer to achieve this?
I have both 30 cal and 35 cal moulds on which I really need to eliminate the annoying GC rebate - on at least half the cavities. I've done some crazy-hillbilly things in my shop and got away with it. Learning a bit more sophisticated method isn't going to hurt me.