Boolet on the left is a Lee 440 RF. $22 for a 2 cav at Midway. GC design, I left off the expensive copper GC and PC'd it.
I just got a plain base .50 check maker - I'm thinking of removing the GC "flange" on the mould. Having a master machinist for a son in law is WONDERFUL !
BTW, loading data is scarce, good start is data on Alex Arms site. 296 / H110 for the lighter weights, Reloader 7 for heavy's .