Well to make it short, the load in question calls for a Hornady LSWC-HP. As long as I stay within the load parameters of the Hornady 9th edition book that I have, I have seen very minimal leading. Hornady states in their manual to keep velocities under 1100fps to prevent excessive leading of the barrel. This load recipe that I mentioned in my first post the author stated that he got a 5 shot average of 829fps out of a Ruger LCR 38 special with a 1-7/8" barrel. I would assume shooting the same load thru my 4" 686 may produce velocities around 1050fps or so. I haven't shot them yet.But for giggles I might pull out the chromo and check them out.