RE: 16 gauge? 24 & 32 gauge?
I grew up hunting with a 16 ga and really like them. In fact still have my grandadsSpanish SxS that I hunted with and it is in great shape.However, I now hunt & shootwith20's& 12's. The 20 ga with the 3 inch chamber kind of put the 16 on the back burner. The 20 is as lightor lighter, has as much punch or more due to the 3" chamber, shells are available everywhere, and are definitely cheaper. Then if you want real knockdown power I go to the 12 or if you do notwant to get knocked around shooting clays shoot the heavier 12 with lighter loads.
Personally I think the 16 will stay around for a long time. It has a loyal following and I personally like the nostalgia of shooting it every so often. Kind of like my 28 ga. I like to shoot it every so often but at the cost of shells, not as often as I like.