Great video. I have a 500 Smith with 4" barrel, and my favorite bullet is a Lee C-501 RF 440, which I cast from Linotype, with the same Lee pot you have. I don't bother to sort them by weight, mainly because my marksmanship can't tell the difference. The bullet weighs 450 grains, with Thompson Blue Angel hard lube, and a gas check. I prefer gas checks for bullets used in 44 magnum , 454 Casull, 50AE, and 500 Smith. Cast bullets from Montana Bullet Works also perform well. By using cast bullets (especially ones you cast), and re-cycling the brass, costs for shooting the 500 can be brought down to reasonable levels, enabling more shooting.
When sorting the cast bullets by weight, are you doing anything special with them? E.g. adjusting powder charge, segregating into different lots, just rejecting those that fall too low in weight, etc?
2 parts lead to 1 part linotype, water quenched. I've not tested the BHN and I don't have leading issues, but that's more a matter of sizing than hardness in my experience.
Great, thank you. I have a 500 and was told I needed to have pretty hard bullets for magnum firearms. I am currently using lead with a hint of babbitt, the hardness is 13-18 as far as I can tell.