Ron, The best move I made when casting was to get a hot plate. I put the mold on the hot plate at the same time I turn on the lead pot. I had thos brass molds casting wrinkle free and filled out the first drop.
I am wondering if a real good cleaning out of the problem cavity. Maybe some acetone of other good solvent.
i ran about 600 by count yesterday with the 130grain solid, no lube groove from mihec. Zero issues. Wife was kind enough to let me preheat the brass mold on the stove, zero issues from the getgo.
i think the most likely answer on the other mold as to not completely filling at the base was the sprue cutter on to tight. Next time i use it, gonna make it looser.
that 130 designed for powder coating is pretty slick, sized down real easy into .357 and .356, to use in the 38's, and the .356 in 9mm.
I made them red for christmas.
they weighed a little less than 130 out of the mold, sample was at about 128grains. Size before sizing down at .358 or .359, already forgot.
