Can you dry fire too much?
This question is misleading because you cannot dry fire or train too much; however, you can dry fire too much in proportion to the amount of time you spend with live fire. Conversely, you can live fire proportionally too much compared to your dry fire training time. Current Production Division National Champion Robert Vogel states that after a heavy live fire training session of say 400 rounds, he has to start dry firing to keep his pistolcraft skill sets accurate and well-executed. In other words, sometimes the noise and recoil of live fire gets in the way of focusing on your trigger mechanics, such as being on the sight during a transition, the trigger prep (taking up the slack) when coming on a target, etc. Dry firing too much, on the other hand, particularly for beginning to intermediate shooters, can lead to a sloppy grip and poor stance. If you don't keep holding yourself accountable for the accuracy of your shooting when dealing with the recoil of live fire with a high enough frequency, your grip can become too loose and you may start to stand too upright to properly handle shooting a live round from a gun.
When you live fire, try videotaping yourself some time shooting at a plate rack where the camera is positioned on the side of you, and watch the back of your head while shooting. If your head (and upper body) is shifting rearwardly a few inches, this generally means you should get a little bit lower in your stance. When you live fire, be aware of your grip with a strong hand and a week hand, your chest squeeze, pressing your palms together and your stance. It is best, of course, to get some instruction, practice makes permanent, but being aware of these factors and burning them in to the brain helps you train properly at home while dry firing.

