You should never practice Tap, Rack, Click or Bang. What happens is you build muscle memory when you do this. It is like the martial artist that practices every day until his reactions become automatic without thinking. Thats called muscle memory. There was a story of a police officer that practiced this technique of Tap, Rack, Click. Then one day while in a gun fight he had a malfunction. As he was taught he Tapped, Racked, Clicked, but when he came back up to click an innocent civilian had popped up between him and the gunman. This brain was shouting DONT SHOOT
DONT SHOOT, but his muscle memory took over and he clicked. Needless to say, a bad situation for all.
I practice Tap, Rack, Flip with any type 1 or type 2 malfunction; slap the bottom of the magazine hard, grab the back of the slide and rotate your gun 90 degrees with the ejection port pointing towards the ground. Rack the slide, and then flip back to target. Do not click until you have a clear sight picture with your front sight on your target. All this is done while maintaining your weapon on the target. This I use for semi-auto hand guns.
Tap, Rack, Flip...Hope that helps you all out!