I personally don't feel a great benefit to traditional dry firing training where you perfect holding the gun/sights perfectly stead while squeezing the trigger on an empty champer (if safe for your gun) or dummy caps. It's perfectly easy to do when you know there's no bang, and hasn't transfered over to me when I know there's recoil coming.
I have however gotten a huge benefit from dry firing dummy caps in 2 other areas tho. One is working on my safe draw to accurate shot time when pulling from my iwb holster. Triple check it's a snap cap in the chamber, and draw as you would for speed with the shirt pull and build muscle memory. Line up for point in the wall and pull. You'll get to see if you're drifting through, pulling too soon, or if you're indeed getting squared up and firing the shot you'd want to if you ever had to in real life.
I have some recoil anticipation problems when I shoot rifle. If I'm at the range with a buddy, I'll ask him to load my 7mm rem mag. Then I don't know if it's the 1st, 2nd, or 3rd shot. It'll show me exactly what I'm doing wrong. Fixing is another matter, but excellent for diagnosis. Worked very well for my handgun and I'm definitely a better target shooter for it.
