Bro just want to say that THIS thread (and a few others) inspired me to pull my 10ga Mercury shotgun from the back of the safe and see how well itll shoot slugs. Its a single shot that I bought several years ago with the idea of "building" a "big bore" rifle using brass shotshells and round ball over BP. Im sure it was meant to be a goose gun with a 30" barrel but I see it with a 24-26 inch barrel

Over the years, I bought a crimping tool and some brass cases; but never much more. My plan was to add a quarter rib with a single or double express rear sight and a ivory flip up front sight. Life got in the way and it sat in the safe.

Reading that your load would be light encouraged me. This is meant to be Big bore Hog gun. Please excuse the thread drift but thanks for the inspiration.