The 2,000 fps loads become necessary as the range approaches 200 yards. Like you, though,I found that it is sometimes a chore to find a load that can go this fast and still group well. Two of my favorites are 130 grains of Pyrodex pellets or 135 grains of 2F Jim Shockey Gold - behind a 250 gr. T/C Shockwave. Another one that shoots real well is the 50/40 200 gr. Shockwave with 110 gr. of 3F Jim Shockey Gold. Speed with the 200 gr. load is up there around 2400 fps, and I'm getting MOA accuracy out of my Omega. I used to have a 30-40 Krag that was in about the same performance class.

Out to 150 yards, the regular 100 gr. charges with regular bullets work fine - and are a lot easier on both your gun and your shoulder.