Originally Posted by rockquarry

I have noticed that 25 yard point-of-impact is consistently several inches higher in the single-action mode vs. double-action. Cartridge, barrel length, frame size, and other factors don't seem to make much, if any, difference. Most persons grip a handgun considerably tighter when using a two-handed hold, keeping the barrel from rising as much at the instant of recoil making point-of-impact lower than with a one-handed hold. Granted, not a scientific explanation and perhaps a flawed one but based on personal experience.