Normally when I smelt down wheel weights I separate out the Clip-On's from the Stick-On's. The reason (for me at least) is that the SOWW's are soft and do make good round balls for Black Powder. I now have a pretty good supply of SOWW lead for round balls and don't need to hoard the stuff so I'm wondering what the standard practice is. I'd like to hear from WW smelters as to what your procedure is, do you separate out the SO's or do you just throw them in with the CO's and combine them.
Everything that I shoot in smokeless is sub-sonic so I'm not too worried about getting the most hardness that I can muster. I'm also wonder if adding 2% tin is adequate when casting combined lead or since the SO's are pretty much pure do you add more tin?