Originally Posted by
dove
From a training perspective, how useful is the concept of a pure, human-free, mechanical zero?
I get what you're saying here. It's also true though that someone can be bad, but consistently bad, like a consistent flinch or grip issue. I've shot tight groups before that were off mark. How does one know if your "zeroing" is really just masking some problem (trigger pushing or something) vs actually correcting for mechanical relationships? Moreover, for real-world use, does the difference even matter?
From a training perspective though, in order to make sure the gun is really telling me what I'm doing and not entrenching bad habits, I've often felt that I couldn't trust myself to zero my own pistol, and I've tried to find ways to remove myself from the equation. See for example, the iconic Glock shooter whose pistol is "zeroed" with the rear sight pushed all the way to the right...