After a possible bad experience with 260gr Harvester PT Golds last season, I have been out to try to get an absolutely devastating bullet to group well in my Omega. After a very short range session this evening (all I had time for), I am happy to say that I may have found my load:

Constants:
T/C Omega Z5 (yeah, the cheapie!!)
110gr BH209
CCI 209M
300gr Speer Deepcurl

Range:100 Yards

The top group is using the Harvester Black Crush Rib Sabot. I did not like how it was grouping, so I only shot 4 times.

The lower group is using the Harvester Short Black Sabot. I am VERY pleased with this, especially (if recollection serves), we get to throw out the worst shot of a 5-shot group!

All that's left is to move this puppy to zero.