I can say the LEE mold for the 440 grain is certainly a value at under $30 and very accurate bullets can be cast,
they run a bit heavy with my alloy but shoot very consistent tight groups

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just a bit of info on these lee "440 grain" 500 S&W bullet molds ,
with the gas check and lube on these cast bullets,
at least using my 95% WW alloy and 5% tin, mix,
the projectiles actually weigh about 470 grains
they are quite accurate (WITH THE GAS CHECKS)

http://www.sagesoutdoors.com/500-s-w-caliber-gator-gas-checks

https://www.midwayusa.com/product/2...1-diameter-440-grain-flat-nose-gas-check