I've had some success loading down my .243 using Blue Dot powder courtesy of both advice and powder from Bewsher500 on here. It means that I can replicate a .223 load (a 65g Vmax going at around 2800fps) which is great as a foxing round, makes a crack no louder than an unmoderated .22 rf and, at least for my rifle, extremely accurate (3/4" groups of 5 at 100yrds).
It got me thinking that I'd like to try a similar thing for my .270W - perhaps replicating a .243 90 or 100g load running again at ~3000fps. Has anyone tried this using Blue Dot, and if so, would you mind sharing load data?
I know what you're thinking - why bother if you've already got a .243 Perhaps like Hillary on Everest - because it's there, and I like experimenting with things.