a comment... I started casting bullets for IHMSA metallic silhouette around 1979....if you are going to shoot rifle or magnum pistol calibers, with a powder other than Winchester Ball process powder, think about adding gas checks to keep the rear of the bullet from being burned off and destroying accuracy.... RCBS large production pot, and RCBS sizer luber... when I got into USPSA switched to two 4 cavity SAECO moulds and made my own lube from a modified Hoch formula.... 1/2 paraffin, 1/2 Vaseline as a plasticizer, and a couple of teaspoons of RCBS sizing lube was the Hoch formula to which I added bees wax in 1/3, 1/3, 1/3 ratios... be sure to flux the pot to prevent the accelerated loss of tin and antimony removed as dross (don't remove... just add some resizing lube and stir).... you can harden a bit if you drop into water, but be careful and don't put any culls back into the pot as commented above due to the danger of a steam explosion... I melted from wheel weights, cast, sized, loaded and shot 34,000 rounds the year I got my Dillon 450 (pre 550)
fast forward 30 years.... all lead compounds are poisonous....I had a blood serum lead level test a year or so ago, and my lead level was an 8.... I would not recommend hand casting for modern available cartridges, unless your are shooting something like Cowboy Action that requires lead projectiles.... there are commercial casters, especially those providing polymer or copper plated bullets available...especially with the USPS providing an "if it fits, it ships" policy as to shipping cost... I just received a back order from Precision Delta at about 16 weeks....things are improving... YMMV