In understanding how to deal with muzzle flip (and ignoring the backward force of the recoil itself that is usually absorbed in the arms and body) I looked at how an auto moves in your hands when a shot is fired. You can obviously see that a pivot point is created where the tang of the gun meets the web of the strong hand. Given where we can put our hands on the gun (the grip and not the slide, where we would have the most leverage to counter muzzle flip), we can achieve the most leverage with the strong hand by keeping it has high as possible on the back of the gun. This part makes sense to me.
What confuses me though is why the support hand is used in the manner that it is. Why do we rely on a side-to-side pinching action of the hand to generate enough friction to try and snap the muzzle back down to target (and to keep the hands from coming apart)? I know that personally, if I don't grip with enough force to hang onto the gun, my hands will start to separate during rapid fire (assuming everything else is neutral and I'm not pushing and pulling). That's fine but to me this puts a requisite on grip strength. A G19 with ball ammo may not be a problem but what about shooting guns that are lighter and more powerful? Also, what happens if my hands are greasy and sweaty?
Physically, the area in which we could apply the most leverage to the flip of the gun is at the bottom of the frontstrap. The lower we go on the frontstrap the more torque we can apply to the gun counter to the direction in which it is rotating when it is in recoil. Why not then focus on a fully locked support wrist exerting pressure against the bottom of the frontstrap (through the pinky) to counter the flip of the gun? The strong side would take the recoil and push and the support side would resist muzzle flip. A slight push-pull could be used to keep the hands together.
One of the benefits of the Isosceles stance is that it is supposed to allow for a relatively equal dispersion of the recoil impulse over both shoulders. But the only way that the support side can receive any recoil at all is if 1) it is behind the gun, which I haven't been able to accomplish with my Glock or M&P without moving my strong hand into an unnatural one-handed grip, or 2) enough friction is generated by the pinching action to keep the support hand on the gun. The first point is important because I'm committed to ensuring that my strong hand grip is in the same position for a one-handed grip as it is for the two-handed grip. The second is important because grip-tape isn't an option with these two CCW guns and my hands may not always be dry and ready to go.
Any thoughts? I'm hoping to better understand how and why the grip is being used. I'm definitely and over-analyzer and I really enjoy understanding down to the details how and why something works the way it does.
Edited by ER_STL, 06 May 2009 - 03:03 PM.