Many years ago I was casting lead to use in a model RC sailboat for its keel weight. It was in the summer when it was quite hot too. I had just poured the lead into the mold and a drop of sweat fell off of me into the lead pot. There was a mini-explosion of lead out of the pot and a small glob landed on the inside of my forearm near the elbow. That little glob took the skin right off down to the thin fat layer underneath instantly. Anyway it did hurt like all heck. It left a scar there for many years. But it has pretty much disappeared now. I was not super concerned with bullet casting before that incident but afterwards I was always more paranoid about being safe around the hot lead pot, etc.