Shooting a Mauser 1914 in range

[alvin]

Originally, I thought the jamming might come from Federal's 71gr ammo. Could it be too weak to push the slide backward enough? By dragging the slide wide open, to my surprise -- this gun does not have a formal ejector and the ejection function is performed by the firing pin, like a Browning pocket pistol. Unfortunately, the firing pin on this gun protruding too little (around 1m/m), it's long enough to perform its firing pin function, but as an ejector.... doubtful.

Is this a "feature" on early 1914? I don't know. Any thought?