I will add that shooting a slug gun accurately at 200+ yards is NOT the norm. I don't, nor do I know anyone that has a gun capable of this using any of the modern slugs on the market. Ballistically they could do it on paper, but most just don't shoot accurately enough to be reliable at those distances.

Accuracy falls off VERY fast with a slug gun or inline muzzle loader. Just because you can shoot 1 or 2 inch groups at 100 yards don't assume it will shoot 3 or 4 inch groups at 200 yards. You may find that past 150 yards the groups just are not reliable enough to be of any real use. You positively have to check your gun and load at the distances you expect to shoot it at.

Paul