A useful site 4seventy. I'm not so sure that I agree with Norma's idea of changing the loading of these classic old cartridges. For instance, they're loading the .416 Rigby with a 450 grain bullet at 2150fps instead of the load which made it famous, a 400 or 410 grain bullet at 2400fps. In my mind, this attempts to make it into a stopper instead of a rifle which could be relied upon to "carry the mail", with a relatively flat trajectory, at the longer distances when needed.