I "accidentally" bought a pound of 2200, have not done anything with it yet - have not run out of my other "normal" powders enough to try it.

I think my 6.8 (in an AR) really likes xbr8208 (which seems to be unobtanium for quite a while now). I have a 6.8 contender bull barrel I have not shot yet, can't decide to keep or sell - looks like based on what you all are loading I have a stock of at least 3 powders that will work if I go into shoot and load development mode this summer for it.