I have very recently(3 weeks ago) been bitten by the cast bullet bug. In the last 3 weeks I purchased 7 moulds, pot, lyman 450, sizing dies,etc. and scrounged 500 lbs of WWts. ((guess I went a little crazy) In my haste to start casting, I have a sizable bucketfull of .44 (rcbs 44-250-K) and 180 Grain Gas checked .30 cal. My question is, did I mess up by not adding tin to the mix?? I want to load the .44 to 1300, and the .30 from 1500-2000 FPS. (super moly lube) are WWts hard enough at these velocities to prevent leading? I know every barrel is different, but how fast can you usually push em without leading?I did water quench about half of them. Will that help?? Any help would be much appriciated!!