I agree the gauge is worthwhile, and perhaps ideal in many ways.

My only specimen is a Sweet Sixteen which is very sweet indeed but it gets little use because I can shoot its twin sister magnum 20 for half the cost using standard 20ga shells which it cycles perfectly.

You cannot tell the difference between those two guns blindfolded unless you cheat and feel up the barrel. I suspect this would be the case with most 2 barrel 16/20 sets or 20/28 sets also. The difference is so insignificant that those who listen to inner logic instead of inner romance select the 20 gauge 'most' of the time.

The 16 would be more popular (as would the 28) if the ammunition companies didn't overcharge us for shells.

I would not pass up a nice double in 16 if it were to find me, but I've never actively looked for one. I feel well served with the 20 gauge.

"The price of good shotgunnery is constant practice" - Fred Kimble