Another one for Paul to possibly update when he's doing work on the corresponding page, C&Rsenal got around to doing the
Webley-Fosbery automatic revolver. A few things they touch on:
1. There were three barrel lengths - 4", 6", and 7.5".
2. The only military buy was 66 revolvers for the Royal Naval Air Service, all chambered for .455, 60 with 6" barrels and 6 with 7.5" barrels.
3. The .38 ACP Model 1902 had an 8-shot cylinder.
4. The .38 and some .455s were the "small frame" version. There was also a "large frame" .455 that was around half a pound heavier.
They're fascinating guns, but the complicated mechanics and tendency to jam on mud or sand easily explain why they barely saw service.