The 7.63 pistol round is pretty effective. I think its dumb that the sights go up to 1000m, who aims that far with a pistol? Even with a stock likes like being a sniper with a submachine gun, and even then, an SMG has a longer barrel!
Older period set films can pull off using it and making it look cool, but today's film has more modern firearms. Like in both Mummy movies people got away with using two C96 Mausers at a time.
There's no way their use would be effective akimbo though, since they need to be reloaded with stripper clips so you'd inevitabley drop one to reload.
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