It depends on the bullet you are using. I don't think you can just say "my gun likes these sabots." It's a the entire recipe of components that come together to give you a good load, not just one thing that fits all load recipes.
For my Omega, the following 3 recipes have given me 1" groups @ 100 yards.
260 gr Scorpion PT Gold (.450), Harvester Crush Rib Sabot (black), 90 gr Blackhorn 209, CCI 209M primer
270 gr Speer DeepCurl (.429), Harvester Crush Rib Sabot (green), 110 gr Blackhorn 209, Winchester 209 primer
300 gr Speer DeepCurl (.452), Harvester standard short black sabot, 110 gr Blackhorn 209, CCI 209M primer
Currently it is impossible to find Deep Curl bullets! I have enough to get me through a couple more seasons if I don't have to make many (or any!) adjustments to my scope.