I recently started loading the 358 Win. Got real good groups with the 225 Accubond at 100 yards, but the groups were real low at 200 yards. It went from 2" high at 100 to about 3-4 inches low at 200. I think I am going to try a 200 grain to get a little flatter trajectory, but was wondering if I could go down to a 180 grain with a 1/14 twist barrel?