Well, I do admit strapping on a pair of them loaded, I gain about ten pounds!
All the "first generation" magnum autos are represented, and it only took me 30 years of patience (and a butt load of money) to find them (and have the cash to buy them on my budget)!
I've never had a 10mm, with autos above and below the 10mm in performance, I never saw the need. Enjoy yours, if you have one, but don't tell me its a magnum. Its not.