Great bunch of guys on this side of the fence too. Very nice OMM and in the rare .22 Magnum caliber. Thanks for posting.
Judge. When you found that water line break your heart must have sank. I can't even imagine the feeling.I do not know when in 1959 the .22WMR cartridge was introduced, but my OMM .22WMR shipped December 29, 1959. (I did not ask for a build date when I bought the letter years ago.) I do remember reading about the new cartridge at the time, and I could probably find the original gun magazines in my collection if I took the time (and 1959 was not one of the years that got ruined when a water line got a pin hole in it and sprayed them for days before I discovered the leak. So much for copper being a "lifetime" water line!).
Wiki is not a preferred source for accurate gun information. Except for the last sentence, the quote is verbatim from "Cartridges of the World," 6th Edition, 1989. (Later editions after calendar year 2000 may include the last sentence.)