I've loaded .38 Special, .45acp, .44 Special and .223 on a Lee 1000 and have to say that they are okay for handgun where you can use carbide dies but they don't do too well on rifle cartridges. Plus the double disk kit (required for rifle powder volumes) for the powder measure is not terribly accurate in my experience. I don't know if you can even get a shell plate to fit the 6.8. The biggest failing of the Lee 1000 is the priming system, most of it is plastic and is easily damaged if you keep cranking the handle after something screws up. The other quirk of the priming system is that it feeds the primers using gravity down a curved chute and once the primer level gets too low the primers stop feeding. Adding powder to a case without a primer results in powder falling into the rotating turret and priming system further screwing up the works. The bottom line is the machines work but they do require you to pay a lot of attention to it while loading.