I'm in the process of working up some different loads for my 45 LC and plan the give Trail Boss a try. Some where on the internet recently I read an article that made reference to Trail Boss and that despite being a smokeless powder it is nearly as corosive as black powder. I can't for the life of me find the article. I intend to give the powder a try regardless but if others experience is that it does have corrosive properties it will influence how quickly I get to cleaning my guns after a match. Then again if it's mucch like black maybe I should go directly there. So anyone with experience with this powder please chime in and share your results.