The little bit of work I did with specific alloys in the last three years or so burned me out real quick on super-science. For one thing, just two alloys worked over from mild to wild in just one gun with just one powder will generate a mountain of notes and stuff to store. It can turn into a full-time science job right quick. So, I have a whole bunch of WW alloy that all comes out about 13-14 bhn straight up, probably has more calcium and antimony in it than it should, takes an add'l 1% SN without getting too stringy coming out of the spout or off the tip of a spoon, so I mix soft sticky weights, roof lead, battery terminals, etc. down to about 12 BHN to make a great, all-around alloy that heat-treats all the way up to 24 bhn and water drops pretty consistently at 18-20. Perfect. Air cooled for below 1800 fps, water-quenched for up to 2300 fps, heat treated for 45 minutes at 400F for anything higher. Generally, of course. If it doesn't work in a particular application at a certain heat treat, I adjust the heat treat or change powders and work it into a sweet spot.