Well, do you buy the argument that a 16 can't do everything a 12 can???
Yes, I agree that 12 gauge is a far better all-around gauge than 16. However, in my opinion, this is a result of ammunition availability, not the potential of the gauge. If your question had been "Do you buy the argument that a 16 can't do everything a 12 can, provided the appropriate shells are available", my answer would be different. That being said, hypothetical ammunition doesn't carry or shoot as well as the real thing, so the answer to your actual question remains that generally speaking, the 12 gauge is more versatile (and cost-effective).
For me personally, I have 16 gauge shells for any purpose (except slugs) that I'll ever need. I can field a 12 or a 16, regardless of the quarry, without compromise.
Starting with the fact there are few 16's on the market right now where you can compare the 12 and 16 gauge versions. One of the few that immediately comes to mind is the Browning BPS. With the same 28" barrel length, it weighs 7 lbs 11 oz in the 12 gauge persuasion, and a still hefty (by upland standards) 7 lb 2 oz in the 16 gauge version of the same shotgun.
This actually serves to illustrate what I was trying to describe. You see, the weight of the Browning BPS in 16 ga is incorrect on Browning's own web site. When contacted, they admitted the mistake and said that the 16 ga version will weigh closer to the 20 ga than to the 12 (the 16 is built on a scaled 20 ga frame). But, this is only one example. Some 16 gauge guns weigh more than some 12 gauge guns (ask Ardent about his Ruger Gold Label). Conversely, some 16 gauge guns weigh much less than a 12 gauge - closer to the weight of a 20.
There's a wide range of weights for 12 gauge guns. Same for 16 or any other gauge. And, that's only weight. What about balance, barrel regulation, LOP, patterns, and I could go on and on. While none of these characteristics have much, if anything, to do with the gauge, they all impact our personal opinions on the various gauges, depending on our personal experience, or lack thereof, with specific makes and models.
I suspect some shotgunners are hard core gauge loyal, some simply buy a shotgun (usually of the 12 gauge persuasion) and say "good enough" without discerning further. And some of us find shotguns that just seem to whisper wonderful things as they come to shoulder and swing, and gauge becomes secondary over fit and feel. I would be among the last group...
Agreed. And, I suppose this is as it should be. Two pieces of advise that I was given when starting out were instrumental in forming the criteria that I use when buying shotguns.
The first was to buy(evaluate) the gun in your hands - not the make and model. This makes total sense. Guns are like cars - every manufacturer makes good ones and bad ones. Vehicles(or guns) of the same make and model can be very different one from the other and, if used, can have been used or abused and/or maintained in very different ways. I bring this up because, unless we're both talking about the same 2 guns, any comparison between guns or gauges can turn into an exercise in miscommunication.
The other piece of advise I was given related more to collecting than just shooting. I was told that there are too many types of guns, countries of origin, models, grades, calibers and gauges, etc., etc., that a person should really decide where their interests lie and concentrate on that(those) area(s). It was this very piece of advise that led me to decide to collect 3 gauges: 12, 16, and 20. I don't own a single 10 ga., 28 ga., or .410 (nor any of the now obsolete gauges such as 4 gauge or 14 gauge). There's nothing "wrong" or "inferior" about any of the gauges I don't collect - I simply don't have bottomless pockets. Even though I have opinions about and experience with the gauges I don't collect, I avoid entering discussions about them because I don't feel I have the breadth of experience with them to fully contribute.
These forums are great for hearing others' opinions, but I have to remind myself that we have members who are virtual firearms encyclopedias, and we have members who don't know squat. Both are free to post whatever crosses their minds. Now and again it helps to consider the source.
Rick, I believe we agree on the essential points. I responded to a couple of your questions, but my ramblings about comparing guns and who's doing the comparing have nothing to do with you. I included them only in case someone is being influenced to buy or not to buy a 16 ga, based on this thread.
In general, I wouldn't recommend 16 gauge guns to new shooters or people who only want a few multi-purpose firearms. For those who have the basics covered and want to try new stuff, a well-built 16 on a properly scaled frame can be a great addition to the fold.