cayugad,
to be honest, I really don't have any major cleaning issues with 777 in my rifle either. I DO have to watch the breech plug, but the teflon tape takes care of that - but otherwise I've never had to deal with the crud ring others report. And it is SURE a lot cleaner than Pyro or Black.
But I'm gonna continue to play with this jug of BM3 to see what I can find out about it. I'm also wanting to run the Chrony on my Pyro RS & CleanShot loads for comparison's sake some day too.