I usually cast WW at 700 deg or a tad more and tried to ladle pour these. I had a hard time with the mold getting too hot without slowing way down. If I cooled the melt below 700, I had trouble with fill-out. This mold seems to cast better bottom pouring - got better consistency than the ladle which is a first. I suppose the 800 gr volume of lead vs. the relatively thin aluminum blocks might be a factor. WW plus a little tin drop at 390 gr and .477-.478 dia.

Wish I could find some H110 - I'll probably start with 4227...