I wanted to get a few opinions on the use of lead from a local stained glass shop. I have a Lyman 370 grain maxi-ball mold for my 50 cal rifles. I have had good success with pure lead but it is on the expensive side here. I am into cheap, so when a friend offered to give me some scrap lead from his supplier for his stained glass work I was elated. I cast up about 100 of the maxi bullets only to find they are almost impossible to get down the bore of most of my 50s. In fact I broke a wooden ramrod on my TC Thunderhawk in one of the shooting sessions. I used my Lee hardness tester and what I found was that the lead must be alloyed with antimony and tin because they tested about the hardness of wheelweights with a BHN of about 9. My plan now is to remelt all bullets, mix with wheelweights and shoot them in my smokeless shooting. Has anyone any experience with this type lead?