When I was active in shooting, some decades ago, we shot slow fire one handed. I don't see anybody doing that now.
Am I missing something? I think one handed was a requirement for some competitions-is that true? Problem is, us
geezers can't hold the sight spot single handed very well, if at all 
Some of us old geezers are still trying to perfect our single hand skills. I've seen young shooters declare its too difficult to shoot single handed after 20 rounds and go to two handed.
Bullseye is still shot single hand standing, unsupported at 25 and 50 yards outdoors. For me, bullseye is the most difficult shooting discipline I have ever attempted. I've even tried it weak handed only, when I was recovering from shoulder surgery.
The younger shooters seem to be attracted to run and gun instead of something that looks boring to them and which takes a tremendous amount of discipline and patience. Old school bullseye just doesn't seem to appeal to impatient drama lovers. But my own personal opinion is that young shooters simply think standing perfectly still and hitting a small target 50 yards away with a handgun is too difficult a challenge for them to even bother with. And they won't consider that maybe refining their single hand standing skills will translate in to helping them with run and gun also. It does. A lot of new young shooters simply can't grasp the concept of learning to move the trigger without moving the gun. All experienced bullseye shooters do. All experienced long distance precision shooters do.
Mentally, us old geezers generally have the patience, time, and interest to learn to shoot bullseye style well. But our challenges are physical, such as steadiness, stamina, and eyesight. The younger shooters like the tension and excitement of run and gun, the older ones like the challenge of a traditional skill, common to most shooting disciplines.
Joe
