I just cast my first bullets (Lee R.E.A.L. .45 AND .50 cal). I read the Lee instructions carefully but it took most of a 25 lb bag of hardened lead shot before I was casting good bullets. I'm sure the tips here would've helped me get going faster but they will help me improve my new skill in the future, I'm sure. I think soaking the molds in mineral spirits before cleaning might have helped me cast good bullets sooner. Perhaps cleaning with Q-tips and paper towels isn't enough.
Before adding flux, I'm using the Lee laddle to skim off what's, presumably, the alloys in the hardened shot to make soft muzzleloader bullets. I don't have a hardness tester yet so I don't know if this technique is acceptable. Also, hotter settings (close to max) on my little Lee melter seem best and a hot mold seems to be more of a problem than a cold mold. (I'm alternating my .45 and .50 cal 2-cavity molds every three or four castings and cooling in a wet towel.)
Thanks for all the tips and any other suggestions are certainly much appreciated.
-Cal