Thanks very much for the link to that video. I'm definitely NOT compressing the 777; 33gr looked high but the velocity with that charge seems good. I'll give it a go. A common view here in the UK is that about 21gr 777 gives best accuracy, but I've tried that and it was nothing special. The guy in the video is getting 3" groups with the revolver on a rest. I would hope to get that kind of group standing, unsupported - perhaps I'm expecting too much!