The sbs isn’t dead but it’s definitely in intensive care, most of the younger shooters won’t touch them. I’ve loaned mine to a few guys and gals at the clay ground and had it handed back pdq, just too much for their tiny brains to process, which barrel to look down, which trigger to pull, safety off etc etc.
There are rows of them in the dealers not moving, but a cheap Italian ou hardly gets time to cool down.
Prices are beginning to fall, but the really nice ones still sell, generally to game shooters that always fancied a side lock, box locks are a lost cause.
My Pa's AyA No 3 which he bought in the 1960's is really well made and locks up with the snap of an English best gun. Its nearly 60 years old and had a good amount of use and still does, albeit Pa is now in his 80's and his shooting is mostly magpies with the 410.
Over and Under's have come to the fore mostly due to:
a) very good marketing,
b) most shooting schools now either Berretta or Brownings for instruction, and most instructors teach a very consistent sporting clays style of shooting,
c) most shooting schools don't have a clue on how to use a side by side.
With an over and under you have pistol grip so the focus os on the trigger hand and take a firm sight down the rib to track the line of the bird and then swing through and squeeze. The forehand is just there assist and take the weight of the gun. This works very well (I believe) to get real consistency and good results on clays.
With a side-by-side its much more akin to hitting a tennis ball or cricket ball with a racquet or bat. The long thin grip for the trigger hand means your trigger hand has very little to do. It's all about the forehand and eyes and hand / eye coordination. Starting with gun down, watch the bird - point at it with the forehand and and go bang. All the trigger hand does is to lift the butt. I say "go bang" deliberately - the trigger pull should be totally subliminal and instinctive - not the focus of attention.
It's an instinctive style of shooting, that you need to learn as a youngster and takes time to get results. I was very fortunate to be taught by Brain Edrich - one of the Edrich cricketing brothers. He was the cricketing coach at the boarding school I was at in Oxford, but he had also formed a clay pigeon (and snipe and wild duck) shooting club and once a week a motley crew of a few of us who were locked away in the boarding school would go down a piece of waste ground between the railway line and Port Meadow that belonged to the school and set up a couple of traps and shoot clays. It was a wetland and there were often duck and snipe. He very much taught us how to shoot side by side, because that is how he shot. Mind you, he did have an old Savage 5 shot semi auto, and I remember once he came and found me - there were lots of duck on the marsh. I got my gun from the corner of the headmaster's study and off we went. A flight of five duck came over head. He started at the back and they were all dead before the first one hit the ground. It was moments like this that kept me somewhat sane - being a scholarship boy dragged from Africa at an English Public School in the 1980's had its challenges.
He would have been in his mid 60's at that stage, but he was a superb shot and pretty handy with a cricket bat as well. He had been a Spitfire pilot in the war and expect he had been a useful shot with one of those as well.