I have a Model 210 in 12 gauge and shoot Hornady SST 300 grain. Sighted in at 100 yards and shoot sub-MOA from a bench with a gun vice. Shot a decent 8 point last night with this setup from my treestand at 125 yards. He didn't go 35 yards and heaped up. In my humble opinion, it is the greatest shooting slug gun I have ever shot. There is a growing movement towards the Savage 210 in 20 gauge. It shoots fast and straight and according to what I have heard, it is as lethal as the 12 gauge. If the Savage was available in 20 ga. when I bought my gun, I would have seriously considered it.
here is a link to a review:
http://www.chuckhawks.com/savage_slug_gun.htm