Anyone casting for the 416 Rigby? What are you using for a expander to start the cast boolit? I have a CZ 550 american and casting the rcbs boolit. Using rcbs dies, they size too tight to seat the cast boolits without shaving a little lead. Lyman and rcbs don't make anything and the Lee universal expander won't accept the 416 case. Diameter of the die too small. Any suggestions would be appreciated.