Hi Art:
The pre-WWI DWM Owner's Manual lists the velocity of the 123gr, ammo at around 1075fps.
There seems to be some variation in the methods used then verses now in testing velocity. Years ago I shot some original DWM commercial ammo and it tested in spec at an average of around 1050fps or so (if memory serves).
I'm going to be testing some WWI military ammo shortly, and will post my results here.
Sieger
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