I'm in the market for a new slug gun, the 500 has just become worn out. I'm currently debating between the browning a-bolt and savage 220. I shot a sub 1" 3-shot group the other day with the 220 and I can't believe I'm going to find a $500 difference between the two.
My question is; what ammo are most of you running? Is a slug scope necessary with this gun as it shoots (and is designed) much more like a rifle? I'd like to use a vortex diamondback, but would like the opinion of others here.

Thanks