Anybody loading for this rifle? What is the bore diameter, and what bullets have you found to work best? Appreciate any knowledge you might share.

I don't have one of these rifles(I want one very much though) but I believe(if they haven't recently changed it)the diameter is .310-.311. I have read that most people have good results with .308 bullets as well as the larger bullets.
My MGM Encore barrel shoots the Hornady 130 gr Pistol bullets as well as the Winchester 150 gr bullets, I think they are called Power Points. As for as powder I think(at least for me) AA1680 turns in the best accuracy and does fairly well for speed.

Steve E.......

I load and shoot 2 7.62 x 39's and they are both at their best with AA 1680 also, see above. One I am positive has a .308 bore as it is a Bill Wiseman custom Sako, the other is a Colt 16" AR upper, and some claim it is .310, but .308 bullets have been fine, and I cannot tell regarding pressures etc. Try to find and use Remington brass as the small rifle primer helps in accuracy issues with this round.

I have experimented with H110 in the 7.62x39mm and got good results, but the SKS is a poor excuse for a Mauser in experimental hot loads.