I used 100 gr T7 (loose), 300 gr SST in my Omega this fall.

http://img.photobucket.com/albums/v445/HuntAway/106-0658_IMG-2.jpg

He didn't know what hit him. Range about 15 yd, passed through (double lung one rib in two out) and he went about 25 yds.

edit: I find them accurate as the Dead Centers but harder to load in my Omega.