Shooting 200gr Matchkings in a 30/06 I finally switched back to 4350. The 4831SC, although it gave great velocities (about 2780fps) just didn't perform as well at the target. 4350 worked best down around 2720 and group size was about 1/2 what the rifle would do with the 4831. This year I won't be using th 06 because I just found the recoil to be excessive in a riflewhich was too light (about 12.5 pounds.). After 60 shots or so prone it really started to wear on me so this year it's back to the 6.5 and 6BR.GD