A good set of snap caps and an afternoon Western on TV helps tremendously for fast draw practice from one's living room. Quick draw, double action revolver fire, tap and rack, quickly changing clips (or "magazines" as the internet experts tell us
), all good practice with a thrice checked empty gun.
Or if you have Netflix, the Narco's series works well too, although you may have to vigorously roll out of and behind your recliner when the cartel opens up with full automatic fire.