On modern shells not only no, but hell no. This looks like pre-WWI vintage with the Prussia mark, and most likely is chambered in 10/65. Longer chamberings were typically indicated with a length stamp, so just 12 indicated 12/65 and 12/70 was specifically marked.
I used to love being able to hit hard at 1000 yards. As I get older I find hitting a mini ram at 200 yards with the 22 oddly more satisfying.