Do your arms "go up" when you dry fire?
If it's happening even with a 22, it sounds like you're anticipating or subconsciously thinking you need to move your arms up.
When you shoot a revolver, try loading one less round than the cylinder will hold. ie load 5 cartridges in a 6 shooter. Spin the cyl and don't look while you close the crane. Then slowly aim and fire all six. ONE of them will be a "dud". If you move your arms on the dud, then it's a subconscious movement you're doing. If you DON'T move your arms on the dud, then you're on the right track. It's then the gun recoil that's causing the movement.
Sgt Lumpy - n0eq