As near as I can tell, the Lee's meplat is about 0.165" and the RCBS is about 0.190".
I think you may be right about the spring in my Saeco. Scrounged a few commercial cast bullets and tested them....they all tested at about 15 BHN. I have an email in to Redding to see if the current unit's parts are compatible with my unit and whether I can buy a new spring.
While looking through my stash, I found about 8-10 lbs of nice, BIG 45 cal slugs marked as being cast of 1:25 alloy. Heaven knows where I got these things, but it must have been back when I was dabbling around with BPCR rifles. I no longer have anything I can shoot these in, so am considering turning them into 180 gr, 30 caliber bullets. The question is, at what point is an alloy too soft to be driven at ~1800 fps when GC'ed and PC'ed?
