I did my first batch of smelting this past weekend and noticed a few unmelted zinc and steel WW & stick on WW''s.
i also used a thermometer, and when i let my buddy run the blast furnace to smelt the lead, he let it get too hot, about 760-780F on the RCBS thermometer.
I was casting today, my first time doing more than a dozen or so boolits. i noticed that it was fairly had to cut the spru(spelling?) off, however when at temp(700ish) and after a few batches of boolits were poured allowing the mold to heat up, i began to get non wavy or unfilled bullets.
does this mean my alloy is ok?
or will sizing a zinc filled bullet destroy my sizer?