I just finished cleaning my Webley Mk VI (see the thread in the Lounge "Gone shootin'). My load of 3.0 grs of Bullseye behind a 265 gr cast SWC burns very dirty, so I think the pressure is pretty low. My brass is the Hornady .455 Mk II which is the short case; 0.750" long. Rather than fumble around in the dark, can someone point me towards published loading data for the .455 using the Mk II case, which is the short case?