I don't have a Contender barrel in 6.8 but got my son one of the Rem 700's chambered for it. We have found it hard to find a bad load with H322 and SSA brass. Some of that brass is on the 6th loading and I've been real happy with it. In my son's rifle, the Sierra 90 is a real shooter, the 110 Hornady VMAX right behind it. A very pleasant cartridge. I have a carbine length 7TCU barrel, a couple molds and a bucket of brass so didn't really see the need to get myself a 6.8 barrel but from all I've heard, folks are real happy with that chambering in the Contender. Enjoy!