Muley Hunter,
I'm not sure about the Barnes sabots. I do know that Harvester Crushed Rib Black will work very well with my Omega. It would be worth the $7-8 to have a pack of 50 in stock to try with your bullet of choice. As with others above, I match it with the 300 Scorpion PT Gold from Harvester. Give them a call and they'll send you some samples to try out if you like. Plus the Scorpions are reasonable at about $23 for 50.
I started with the Omega just to extend my hunting season and now I'm a MZ range rat. It's addictive.