Data from Manual of Pistol and Revolver Cartridges:
7.5 Bergmann No. 4; 7.5x22mm (90 grain bullet??)
bullet weights for No.4a: lead RN = 87-92 grains; jacketed flat soft nose = 83-85 grains. No MV given.
8mm Bergmann No. 4; 8x22mm
five different bullets listed, with weights from 84-86 grains up to 112-113 grains. No MV given.
7.8mm Bergmann No. 5; 7.8x25mm
ten different bullets listed, weights from 77-80 grains to 87-92 grains. MV 1312 fps, ME 324.6 ft lbs (therefore bullet weight 84 grains).
11mm Bergmann No. 6; 11.35x23
three bullets listed: FMJ round-nosed = 203-206 grains; FMJ flat-nosed = 199-202 grains; unspecified = 148 grains. No MV given.