Been casting for a few years and lately ( last year or so), gotten really involved. Have a few NOE molds along with a couple Arsenal and a bunch of Lee and RCBS. Well, I need to move from shooting range recovered lead ( Mostly bought from Evilbay) that I am not sure of hardness to a more caliber correct mix. I picked up 4 ingots of Rotometal 30% ant / 70% PB along with a pound of tin. I know I have a lot of playing around to do, but the big question is, How much 30/70 to add to, lets say 15lbs of range lead, to raise it one Brinell point. Are we talking small amounts to change or large amounts of 30/70. Just trying to get a good starting point. Don't want to waste 30/70 by putting a lot in the mix for little gain but also don't want to not make any gains by not using enough. Mostly looking for a starting point to, well, start. ( hardness tester is on the wish list)
I think most of my bullets are to soft now, thats what got me thinking I needed to step up my game and get more serious with the casting.