Here’s what I mean:
This is my strong hand wrist during count 1 (establish master grip) of the draw.
[img]
https://live.staticflickr.com/65535/...7fe9b956_b.jpg20200214_161359 by
OrigamiAK, on Flickr[/img]
This is my strong hand wrist during counts 3 and 4 (hands join and gun goes to full extension, respectively) of the draw.
[img]
https://live.staticflickr.com/65535/...1da65a34_b.jpg20200214_161417 by
OrigamiAK, on Flickr[/img]
The second picture is what I mean by ‘back pressure on the strong hand wrist’. I make that change after the gun is lifted out of the holster, and as the hands are joining. I believe it to be important to get that done as early as possible in the draw, because the wrist angle is key to index, which supports highly efficient sighted fire. Not sufficiently setting the wrist (insufficient back pressure), particularly when drawing from AIWB, often leads to index and shots drifting toward the shooter’s support side.