I have an omega scope on all our muzzleloaders with the bdc and so far, they have all performed great. I haven't had the chance to shoot past 150 yards yet, but soon. I shoot 110 grains of BH209 and 250 grain and 300 grain shockwaves and so far, the 150 yard circle has been right on. One day, I shot all three of our muzzleloaders topped with the omegas, and all three at 150 yards were right on. Two were shot with the 250 grain bullets and the third with 300 grain bullets. I am curious to see how close the 200 yard circles are with my combos, I'm guessing they will be close. I'll report my findings.