You're probably right on that. I know that Elmer was the brains behind the magnum cartridges, but I've not read too much on him so I just know the story behind the .44 magnum. I watched the history of the Magnums on the History Channel via Youtube, and it was a great source of information.
"It's a gun you loaded on Sunday, and shot all week."
"If God didn't create man equal then Sam Colt had made them equal."
"Fast is fine, but accuracy is everything."