Actually, Johnny, only " Correct Practice " makes perfect. :wink: :thumbsup:
You might consider the fact that you flinch with all guns is that you have not been practicing correctly with any of them to get rid of your flinch.
I learned to shoot first with a single action revolver. We could skip-load the cylinder, and never know when the gun would go off. You can do the same with any revolver, but to do the same kind of thing with a pistol, you have to make up dummy rounds( casing, bullet,but no powder or live primer).
With a flintlock, you can have someone else load the gun and either not put a charge in the barrel, or not prime the pan. With percussion guns, you are pretty well stuck with having someone Not put a load down the barrel, as you can see whether their is a cap on the nipple when you bring the gun up to shoot.
You should do lots of dry fire practice at home, with an unloaded gun. Put a piece of wood, or a rubber eraser in your cock for practice with a flintlock. Use a pencil eraser over the nipple, or even those plastic valve stem "nuts" for tires over your nipple if you are practicing with a percussion gun.
Concentrate on your front sight movement, and your breath control, squeeze, and follow through. Then adjust your stance to remove strain on you eye and neck muscles, and steady the movement of that front sight. Busy your brain with all these things and it won't have time to respond to any unconscious command to "flinch" when you pull the trigger.
At the range, always wear ear and eye protection. Start out your shooting sessions with a .22 shooting the quietest ammo you have. Work up the noise factor. I even have students begin by hip shooting both handguns and rifles, so the gun is NOT NEAR their eyes and ears when it goes off. They get used the sound the gun, and any movement of the gun in recoil that way. It seems to teach their brain that all their fears about being hurt by the gun when it fires are silly.
If you are using scopes as sights on rifles, consider using a " scout " scope, with its longer eye relief, and position out on the barrel over the forestock, rather than a traditional scope that is mounted on the action, and poses the Optic lens only inches from your eye. The scope tends to both magnify the target, AND ANY RECOIL MOVEMENT, which the brains uses to scare itself. By using the long eye relief scope on your gun, the brain does not hit the panic button when the gun fires, because it knows that the scope is too far away to hurt the head in recoil.
I helped one long time shooter of scopes get past his flinch by taking the scope off his gun, and having him shoot the gun with iron sights. I did have him do some dry firing, and just to busy his brain, I had him close his eyes, and point the gun off at an angle to the targets, then called out a number for him to shoot, so that he had to move quickly to locate the target and fire fast. Sometimes I put a cartridge in the chamber. Sometimes I didn't. I loaded his magazine one cartridge at a time, and sometimes just made the noise but didn't leave a live round to cycle into the chamber.
The only shooting coach I had when I was growing up was my father. He had no formal training as a coach. But he become a very accurate shooter killing rats in the alleys of Chicago back in the late 1920s with his .22 rifle. And, he seemed to know how to spot what I was doing wrong when I began missing the targets. If you have a shooting coach available at any local range, hire him for some lessons. If not, ask experienced and competent shooters to watch you and give you pointers. DO WHATEVER they tell you to do, no matter what you think. Whatever you have been doing isn't working too well, or you wouldn't need their help, right? Once you do it their way, no matter how wrong it seems to you, and do it correctly, THEN, and only THEN can you evaluate their advice as useful or not.
I am Left-Handed and some of the things good shooters do who are right-handed with right handed guns just don't work for me. But they are very few, and they relate solely to how the particular gun is designed to function. I learned a long time ago to look at the Stance and foot placement of fine shooters, who were right-handed, and simply reverse the positions of the feet when I shoot Left-handed. Speedy operation of a Right handed bolt action also requires different movements by Left-handed shooters. I love to hand my LH bolt action gun to RH shooters, and have them dry fire the gun and cycle the bolt. Its the first time for most of them to really understand the problems these gun designs pose for LHed shooters. Then I get to teach them to " improvise, overcome, and adapt."
(For instance, loading a clip in a M-1 Garand works for RHed shooters, but doesn't for LHers. I had a shooting coach helping me qualify for my CMP rating using his Garand, and even he laughed when he realized that I could not load that clip of cartridges in the gun with my left hand the way he had been trained, and loaded the clip with his right hand, and avoid the "M-1 Thumb".)
Practicing your same mistakes over and over again only reinforces these mistakes, and makes them a deeply held muscle memory activity, much harder to change and overcome. If you find yourself flinching, STOP shooting immediately, and call it a day. Sometimes just getting a better night's sleep and rest is all you need to clear you head ang stop flinching. If you flinch again the next time you are at a range, STOP, and have someone skip load the gun, or just practice dry fire exercises for the rest of the session. One or two good shots at the end of the session, where you don't flinch will do you more good than shooting 20 to 50 shots while you continue to flinch. If recoil is the culprit, then use reduced loads during practice, and shoot the heavy loads only at the end of the session, or only just before you go hunting. If you shoot only "rhino rollers" in practice, all you are doing is teaching your brain that shooting that gun is going to cause you pain, and that is not a good association you want your brain to be making, consciously, or subconsciously. :thumbsup: