Tumbleweed, we just started working up loads with 230 OTM hybrid in one of my old accumarks I sold to a friend. We found the accuracy node to be right at 94 gr of H-1000 in a factory 30-378 Wby which is about 2880 fps. This was at 1300 ft. alt. The rifle, even with Wby freebore, shot 1/2 moa right off the batt. This is a 26" 1 in 10 twist. My point is you may want to drop back a bit on the charge and see if it helps.
Jeff, here's the numbers I've been looking at: Numbers are at sea level, 100 yard zero, 10mph wind and at a distance of 1000 yards.My son is running the 230 @ 2775 fps from his 300 win. For a comparison he use to run his 210's at 2916 fps from the same rifle. Comparing these two loads they are almost the same velocity at 1000 yards, but the 230 carries about 130 lbs more energy and it has shown us it's true ability to buck the wind very well.
Just thought I woul toss this out there for reference.