Tell you what I've been thinking of putting together ( just what I need....another project in the works!)
Essex .45 frame, USGI parts and a Ceiner .22 top end. I think I can put the whole thing together for around $450.00.
My.02: I'm not a subscriber to solving a flinch problem with a .22.
Get a buddy and do some ball/dummy drills. It will illuminate your flinch, which is most likely anticipating recoil. Is your round strike low but still on the centerline? If so try this..... Study your sights while achieving a perfect sight picture. Concentrate on the front sight and mentally repeat "front sight, squeeze" over and over as you squeeze the trigger. This will help with a surprise break of the round.
Revolvers are a little trickier but the above will still work. Just smoothly pull through the double action.
Presently I’m transitioning back to a double action. I usually work with a match .45 but have begun shooting a Sig. Those 1 sec draws are a little tougher with a double action. The key is to quickly achieve a sight picture (high ready), stage the double action as you present to the target and refine the sight picture to what’s needed to make the shot.
You may want to give that a try also. Achieve a good shooting stance (boxers stance works well), grip the pistol loosely in a high ready. Concentrate on the target and keep your front sight in your peripheral vision.
Begin to present to the target. When you do this begin to tighten your grip and also refine your sight picture shifting your concentration onto your front sight.
Your finger should be on the trigger and should be taking up the slack. When everything comes together (good grip, arms extended, proper sight picture/ alignment) the gun should go off.
Practice SLOOOOOOW and work on fluidity of motion. Dry fire a minimum of 30min daily. It will take you between 3-4000 repetitions before your neural pathways align and give you that minuscule advantage (muscle memory).
This is entry-level stuff but it’s the foundation of solid shooting.
Hope this helps.