Both WW and Remington had "Hi-Speed" loads in that era and some were issued or even privately purchased by "Gunnies" of the time.
Metal Piercing loads were available as well as the the 200 Gr. "Manstopper".
My Dad came home from the 1960 Nationals at Perry with an "X" prefix four digit serial numbered one from the DCM. It was later stolen from one of my brothers.
You may find John Taffin's article in the December '22 issue of GUNS magazine of interest.
Searching this site will keep you busy for days on the subject too!
Good luck and keep your powder dry!