[alvin]

Thought about shooting 9x19 from 7,63 Mauser? One guy tried it many years ago, and he said the bullet flied out without visible damage to the gun. Not me, unfortunately, his words belong to the category that I cannot simply ignore.

The shoulder of 7,63x25 is a little bit higher than case length of 9x19. It is interesting to notice because the contour of 9x19 (less taper, "fatter"), chamber length of 7,63 pistol is effectively shortened when 9x19 loaded in. When firing 9x19 from 7,63 pistol (haven't tried yet), an obvious potential problem should be piercing the primer, well, beside blow up the barrel.