Quote Originally Posted by tacfoley View Post
During development of the Old Army one of Ruger's Engineers filled the chambers with Bullseye powder then seated a ball and a then cap. The gun digested six loads with no problems.

That's quite the test.

Info appears in Bill Ruger and His Guns'.

However, please don't try it out, OK?
thats quite true but he also recommended black powder loads only
http://www.sixgun-forums.com/sixguns...ruger-old-army