Hello. I guess this is more a general pistol question because it have a sp101 3" barrel and a Usp40 compact and have been shooting hardcast(no gaschecks) and have noticed after 20 shots or so it does get pretty dirty. I have been told this is one of the cleaner powders. Is there a way to keep the soot down? Is there any kind of tricks as far as hard cast to keep it shooting cleaner? would pushing it or a ligher bullet faster burn more of the powder, Is the soot more of a short barrel problem? thanks