This is Part one of a Two-part series on reloading cartridges for the British Webley MK VI service revolver. This was the official British Army sidearm of World War I. It is chambered for the hard to find .455 Webley cartridge, though many of these guns in the U.S.A. have had their cylinders "shaved" to chamber .45 ACP cartridges on moon clips. Here in part 1 I'll show you a safe .455 Webley load for the old gun. We'll baseline performance with Fiocchi factory ammunition and compare it to the performance of my hand-loaded ammunition.