NickSS,
Any problems with leading at 850fps and your 30-1 alloy? Gas checks, or plain-based? (I assume the latter.)
I know many other aspects affect the leading issue, BTW.
Anyway, I'm looking to cast some soft .45s and 200g .38s for the same reasons some have cited here, i.e. the expansion potential combined with heavyweight straight-on penetration. It's what the British valued in the .455 and their initial 200g LFP .38 in the 1920s, and more modern analyses also indicate the value of soft lead as a wounding mechanism. I like the controllability of standard-pressure .38s and .45s, with the other advantags (or potential advantages) listed above. Buffalo Bore .38s are apparently gas-checked pure lead (BH 5 or 6), and their .45s are about BH 9. Yours are about a BH 6, I guess?