I chose my powders the same way you did with your .308 by others' experience.
Until I started with the 6.8 I had pretty much settled on IMR 4895 as my all around powder for 30-06 and even 5.56. Velocities are a little low on the 5.56 but accracy looks promising.
I have a some RE10X and some H322 to try with a bunch of ProHunters but haven't gotten to testing yet. I have these two powders as like you I have seen good results from those who have worked with the 6.8 for some time now. I figure from what I have seen here that H, TimW, HTR, Paulo, and others have done a lot of work and are willing to let the rest of us reap the rewards.
Until I started with the 6.8 I had pretty much settled on IMR 4895 as my all around powder for 30-06 and even 5.56. Velocities are a little low on the 5.56 but accracy looks promising.
I have a some RE10X and some H322 to try with a bunch of ProHunters but haven't gotten to testing yet. I have these two powders as like you I have seen good results from those who have worked with the 6.8 for some time now. I figure from what I have seen here that H, TimW, HTR, Paulo, and others have done a lot of work and are willing to let the rest of us reap the rewards.