The trigger weight, is a mute point, if the punch draw, a method of starting to fire, in a confrontation, is taught.
The shot is started from the original first, and final grip of your pistol.
(To get there, miles and miles of dry fire)
First, pistol unloaded, no magazine, or cartridges, anywhere near the indoor training area.
The same holster, same place on belt, dressed the way I would be dressed to go out. Glock 19 4th Gen.
Facing an outside wall, that would stop an inadvertent shot fired.
Target, a life sized cardboard silhouette.
Clear cover garment, first and final grip of pistol, lift till well clear of holster, swivel till slide is parallel to ground/floor. Now punch pistol forward, fast, till right hand gripping pistol, hits left hand, which has raised till it is level with hand holding pistol, left hand wraps around hand holding pistol, and the PUNCH! continues, till all stops, both eyes open, behind sights.
The last few inches of forward travel, has finger contacts trigger, Gun fires, as it stops.
The sights recall from where the shot went! Not were it is going.
A flash sight picture, the second, or more shots follow, depends.
Dry fire is imperative. Same Gun/Same place/always!