An important part of handgun training should involve experimenting with your “off” or non-dominant hand. For right-handed people, this means performing the draw, aim, and fire as a left-handed person would. For left-handed people it’s the opposite.
This may not seem all that difficult until you try it, but then any weaknesses you have becomes starkly apparent.
Author Tony Walker talks about this in his article “Advanced Weak Hand Techniques” on USConcealedcarry.com:
“When you shoot with your left hand, your brain has to give the left hand orders, like the ship’s captain telegraphing orders to the engine room. What normally happens when you first try and shoot with your left hand is that your shots miss the target!” (Read more at USConcealedCarry.com)
The inexperienced hand doesn’t have any developed muscle memory. There will be few or no automatic movements. You’ll have to directly tell your muscles what to do. This slows things down considerably.
For these uncoordinated learning exercises, it’s best to start with an unloaded or dummy gun just in case you drop it or accidentally pull the trigger before you intend to.
The draw itself can be difficult because your gun will probably be in the same place it usually is; probably on the other side of your body and some contortions might be necessary to get a good grip on it when you pull it from the holster.
This type of practice may seem like a waste of time, but in reality you never know when your dominant hand might become incapacitated.
It’s possible that you could break your arm and have it in a sling for a while. Trying to learn how to use your other hand while you’re injured is going to dramatically complicate the process.
In addition to drawing and shooting, try reloading your weapon with your other hand. Start by switching hands first and then see if you can reload with only one hand. Holding the weapon between your knees is one way to do this, but always keep in mind that safety is a paramount concern.
Any physical motion involving practice with your non-dominant side can help to improve the coordination and skill of your usual draw. Most people find that their weak side gains a better understanding of what happens during a draw. Subsequently, speed, safety, and accuracy improve.