I think the more "practical" term for this kind of shooting is called "Shooting from retention". I practice it, but it's not something to be done on a whim. There's muzzle blast to contend with, possible powder burns, and of course, if you're not careful, you'll shoot your support hand off or worse!
There's lots to be considered prior to doing live fire drills from retention.
1. Make sure not to cross your hip/thigh when drawing.
2. If you strike with the support hand first (to create distance) remember to retract your support hand prior to firing.
3. Wear appropriate clothing so you don't catch on fire.
4. If you shoot a ported weapon, roll the pistol 90* out before firing or you'll get a face full of fireball.
5. DO NOT practice this alone. Even when you do it a million times, it only takes one snag of the clothing and a bad day to put a round thru your leg.
That's just a primer. Get some proper instruction from a qualified trainer before you go live with this type of shooting. It's a lot more complex than it looks. I watched a so called "trained" individual put a round about 3" from his right foot while trying to show how badass he was during a training segment on the matter.
As far as your question, I can reliably put rounds into the torso of a target from contact distance to about 5 yards. Anything further and you really should punch the gun out and put metal over meat and proceed to ventilate.