Farmerboy sorry i missed your post. Dry firing, if properly done, is critical to developing good breath control, sight pictures and trigger control.
my preferred method is to use a sharpened pencil wrapped with tape to position the pencil in the center of the bore. Draw a dot on a piece of paper. Place the paper on a cork board, the wife hates it when i punch holes in the dry wall, assume a proper shooting stance with the pencil about 1/2" from the target. Obtain a proper site picture and release the trigger.
With a 1911 you should be able to put 10 points into a 1/16 inch circle. if you do this then you are ready to start shooting live rounds.
I also use dry firing as a diagnostic tool on the line to determine a variety of problems. This is generally referred to as ball and dummy.