Those of you that were so quick to disparage my input have no idea what a training scar, is it has nothing to do with a scar or injury, if you are so inclined just take a look at this you-tube link
next I suppose you will tell me that Larry Vickers doesn't know what he is talking about.
I know this is a competition forum, but competition is only part of the reason why we / I own handguns.
Dry firing is a great tool to learn our skills read below for an in depth assessment of why I originally brought up the subject of not looking at your mag-well during reloading.
Shooting is no different from other psycho/motor skills, these skills develop over time, constant repetition is required to ingrain the desired skill. When you train you set pathways in your brain at the neurological level, drawing your handgun or reloading your handgun fires a particular series of nerves.
The more times you use the same neuro/pathway the more it develops. It also develops a substance called myelin. Myelin is the substance that helps conduct nerve impulses, the more myelin that you develop the more efficiently the nerve impulses can run.
To simplify it think of your skills honed through dry fire practice as a walking path to a specific destination, if we begin to learn our skill-sets from the same starting point and take the same pathway each time over many repetitions the path would eventually be a deep trench which would be easy to follow even in the dark.
In contrast if you took several different pathways to your destination none would be very well defined. Now add the fact that if you take different paths to reach the same destination you have to take the time to decide which is the path to follow, which is the best at that time (which could be a critical life or death) decision.
According to "Hick's Law" which relates to reaction time and states that the time it takes a person to make a decision will be proportional to the number of alternatives available. If we had to reach our destination at a critical time we could do it but it would take longer. And, if chased by wolves the time lost could mean our survival.
I try and train to learn only one pathway myself, I do shoot IDPA and practical action but they are only games, which Life is not.