There is a very popular thread on this message boas, "Breakpoint lead vs steel". Would it be possible that someone could collect and organize the thread into a coherent web page? If Trapshooters.com isn't interested, or if nobody else is trying this, I'd like to give it a go. My concern would be over stepping on the toes of people who have so diligently been contributing to this knowledge.
The lead/steel discussion needs attention for many reasons; cost, environment, utility, and so on. I'd think loading with steel would make cleanup easy, especially folks like me who OOPS often. On a same note, think of the market for magnetic shot catchers. Place them out in the sweet spots and collect shots one. An electro magnet could make that a very cost effective process,
I've never shot steel, ,but my interest is piqued by this thread - especially the information about energy and numbers of BBs.