Ok, in Raiders of the Lost Ark, Indy used two Hand Ejectors. The one with the nicer looking band sight on the cut down barrel was a .45acp 1917. The other, I think the one that was used in the swordfight scene, was a .455 (as I recall) with a ramp sight attached to the barrel.
It's all explained in the webpage that I linked earlier:
http://www.imfdb.org/index.php?title=Raiders_of_the_Lost_Ark
The Mark II and M1917 (S&W version) are pretty similar in appearance (being essentially the same gun), so I wonder if the main use of the former was as a "hero" prop that gets nice camera exposure while the latter was meant for tossing around more (depends on the availability and value of the props). Either that or Indy liked to carry similar revolvers chambered in different calibers, one loaded by moon clips (unless he wanted to eject the cases individually with a pencil or something).
I love the TV commercial for the Judge...where the lady pulls this behemoth out of her purse.....yeah, right!
The most effective ad for The Judge is the "Max Payne" movie.