A few years back Ken Mollohan came up with an alloy, rightly named Mollohan's Mix, that when you mixed X pounds of it with Y pounds of lead based wheel weights, you ended up with X & Y pounds of Lyman No 2 alloy.
It sure saved on shipping costs if you could get cheap wheel weights locally.
Now everything is more expensive, but you can bet that store bought bullets will be going up at the same rate, so casting is still an option.