I have been using a Savage 210F (12 gauge) for years. It has killed more deer than I remember out to more than 150 yards. When I first got it, I tried a number of different slugs and settled on the Remington 2 3/4 Copper Solids. I think they are call Ultra now with improved ballistics. Here in PA, we are mostly in thick woods and it has never been a burden. I did have the trigger done a couple of years ago but, it killed lots of deer before that was done. It has been so accurate and reliable that my Browning with a rifled barrel has not been out in years.

With all the improvements in 20 gauge loads in the last few years, I have to believe that the 20 gauge version would be almost as effective; particularly if 3 inch shells were used.

A good scope is one key. I have used the Simmons 3.5 x 10 x 50 all these years. It has taken a pounding from the slug loads without failure. The scope is large but, I get more light in the woods.