In regards to the Judge and the Governor, I know that both the .45 Colt and .45 Automatic both have an enormous gap to jump before they hit the rifling, and this does cause deterioration in accuracy and velocity. I also know that when these first came out, there was absolutely nothing on the market in regards to "defensive .410 usage". Everything was simply... run-of-the-mill shotshells. I know a few companies have introduced ammunition specifically for these revolvers, namely Winchester and Hornady come to mind. Do these respective ".410 defensive" shells actually do anything to increase the defensive capability of the .410 loading, or would one be better off with loading either .45 cartridge in these revolvers ? Asking for a friend's father who recently purchased a Judge, and for my personal curiosity.