I load up the weapon that I'm practicing with with snap caps for in home dry fire practice. I'll practice draws and presenting the weapon. Practice trigger pulls (that is what the snap caps are for) and clearing failure drills.
For example on my Glock. I'll draw the pistol just like I would if I had a threat and once on "target" I'll pull the trigger and listen for the striker to hit the snap cap. Then I will do the failure drill where I pop the bottom of the magazine to make sure that it is seated in the grip and then I move up and rack the slide to place a new round (snap cap) in the chamber and Fire again. I have two magazines that I practice with and I make sure they are clear and then load 5 snap caps in each one. After 5 snaps on the first mag the last tap and rack the slide will lock back on the empty mag. At that time, I'll practice changing the mag under fire. After the next 5, I'll pick up the snap caps and reload the mags and work some more.
I will also use snap caps when shooting. I'll have a friend load my mags and he will mix the snap caps into the magazines. Sometime all 10 and sometimes none. So I don't know where or if there is one in the mag so it helps me practice problems with live fire. Some ranges might not allow this type of training, but I live in a rural area and have a range at home.
I also use the same training with my Shotguns and Pistol Caliber Carbines.
As always make sure that there is nothing in front of the muzzle of the weapon you are practicing with. Make sure that there are no live round near you and that there are not magazines with live round that will work in the weapon you are practicing with.
I friend of mine was doing the same drills as me and grabbed the mag that he had put to the side and put a 45/100 inch hole in the side of his house. He was facing in the correct direction and no one was hurt, but it woke him up a bit. Just always be sure of were the barrel points and that it is in a safe direction.
Kershaw Shallot 1840, Kel-Tec P-3at, Kel-Tec PF-9, Glock 17, Glock 19, Glock 26, Kel-Tec SUB-2000 9mm (Glock 17 mag compatible), Maverick Arms 88 Security 8-shot 12 gauge.