Marsh, you probably can add some linotype to harden up your alloy. I however shoot straight wheelweight metal that I drop directly into water, which hardens them a bit. You should let your bullets set a few weeks before loading, which supposedly lets them achieve their full hardness. I shoot a 440 gr. LBT at just under 1350fps., and never have to clean out lead using LBT's Blue soft bullet lube. I have fired water quenched wheelweights to 1800 fps. in a 45-70 rifle with no leading either. I do reccomend a gas check mold for full power loads, as the .475 runs 50,000CUP. If you can make straight WW work, it's a lot more convenient than mixing alloys. Give it a try before investing in Linotype. Have fun.