If you want a tight chamber you set it to tight side of the go gauge, that's it. If the go gauge go's, then any saami spec factory round "should" chamber, that's what the specs are for. As mentioned, most factory brass is set back from that so it will still chamber in a minimum spec chamber. If you head space to that brass, your likely not in saami specs.
I don't care what you do with your rifle at all, and I'm not being argumentative.
I just don't understand the point unless you don't care that your rifle is out of saami spec, which then I would understand that your trying to create a situation that most can only achieve with proper reloading practices. Like most, I shoot for about a .002 "bump".
Given the fact that any factory ammo should chamber in "tight" saami spec chamber, if you want to get close to .002-.003 head space with factory ammo, your likely going to be out of spec. I don't see how you can have them both.
I get what your getting at, and do see the point. I could also see how it could potentially cause problems, especially if the rifle ended up with a new owner.
If you set your head space to your brass, and your go gauge go's, I would have to assume your brass is out of spec due to the fact that if you set your chamber back at all from there, your brass would not chamber.
I'm not going to jump on you about your attitude, because I don't always have great attitude either, but you come across a bit abrasive, which I have found is not well received around here. Good luck with it.