Before the tungsten non-toxics came along, I went thru a few 10 gauges. An Ithaca Mag 10, two SxSs, and 3 Browning BPSs. Nothing can compete with the 10 for big birds at long range. Swan hunting, it was in a class by itself. It patterned 'T' shot very well. The weight of all of them was a major gripe - and the Mag 10 needed wheels. I will never understand why when we went to shooting less weight of shot, the manufacturers figured we needed 2 to 3 more POUNDS of gun to do it with. I dearly wished Remington had scaled up the 870 or 1100 just enough to handle the larger round. I had my last BPS machined down to a much more manageable weight and was relatively satisfied. When tungsten came along I went back to my 3" 12 gauge. If you haven't gotten Ballistic Products 10 gauge booklet, you need to.
What could have happened... did.