someone should make direct replacement barrels for this round and sell brass and dies as well. I think there would be a market. the taper of this round would aid in chambering and extraction in a dirty weapon. the down side is compared to the grendal it has less case capacity and the less than optimum throat placement. but it would still be a good round. some were i read that this round was competive in bench rest at one time. there is also a 6.5 mm PPC. . I have read that the PPC rounds do not work well in SA rifles, although I have seen AR15 uppers in 6mm PPC.
Then again on a AK you could just build a 243 WIN. same build as a 308 AK but with a 6mm barrel and it will out power all the shorter rounds. the beauty of a 6.5x39 AK build is the only thing you would have to change would be the barrel.