I have cast and reloaded for my 5, 44 Magnums since '89. I tried the "BHN vs pressure" formula but found it was just so-so. My main concerns are #1, bullet to gun fit, #2 decent lube, and lastly (#8?) BHN. I have driven my cast 240 gr LSWC to 1,400 fps through my Ruger SBH and Dan Wesson 44H with decent accuracy and minimal (no) leading using Wheel Weight alloy (BHN approx 12) with C-Red lube. In haven't run any SWCs over my chrony when fired from my 20" Puma, as I normally use a different bullet in it (Ranch Dog 265 RNFP w/check). But all my cast bullets are sized to fit the gun...