I think the Savage 220 should be a great woods deer gun. I can't see it on the plains for 'lope or buff though. Elk and moose? I don't own any revolvers, 4" barrels or longer. I have a Smith .38 snubbie plus a Glock 45 9mm and a Smith Governor revolver now on mail order. The Glock 9mm is a 4.02" barrel and can fire bullets well over 55 grains. Can you see yourself Glocking for deer with a 9 mm? What the guy should have done was walked right up to the wounded deer and popped him in the brain one or more times. I have my doubts.A 220 is definitely still a shotgun, although probably the most accurate slug gun. Range and accuracy are not in line with any decent rifle. Depending on the slug you shoot in 20 it will be a few pounds less to a couple pounds MORE recoil energy than a 308.
I see the OLAP lands are strictly shotgun, so that is that. But, if you get to a spot where you can use a handgun there are some really interesting options.