doesnt matter what kind of bullet it is, as long as it weighs 180 grains its DEADLY, even on ass shots....Todbartell-2009
If your worried about weight, Benelli make's the Ultra Lite. I think it comes in at about 6.5 LBS. in 12ga. semi auto loader also in 20 and 28ga. A bit pricey at just over 2 grand but pick on up and it will be hard to put it done.
Mostly upland I would go 20
Mostly waterfowl I would go12
I prefer a 20 for upland and a 12 for ducks, but for simplicity sake I just use 12s for both, with different loads.
Check the prices for shells before you decide, you may be surprised to see how much more 20 gauge shells are than 12s.
To warm barrels and cold noses