If you have a 220, why don’t you want to use it? Some of them are tempermental. But if you find the slug your gun likes, then it’s easily a 150yd gun.
I bought a browning A-bolt 12ga the first go around when browning offered them in the late nineties. They reintroduced them a couple years ago. Hands down, the best firearm purchase I have ever made. Hard to beat bolt action slug guns; i’d work on trying to find a load for your savage.