WTB .223ai go gauge

I thought all the AI cartridges ran the same gauges as their standard counterparts?

This is my understanding. The datum line is the same for both, which makes it easy to shoot standard ammo and fireform.
I read on here, I believe, that you need an AI gauge and that a standard .223 go gauge is the No go gauge.

Either way, I have neither. 😆
 
AI (the computer brains) says Huntharder is correct and while AI cartridges can fire-form from factory ammo they do NOT utilize standard go, no-go gauges. or so I just read on the web...

Ackley Improved cartridges change the chamber geometry — most notably the shoulder angle (typically 40°) and body taper. Because of this:

  • Standard parent‑cartridge gauges are usually too long for an AI chamber.
  • AI GO gauges are shorter than the parent cartridge’s GO gauge.
  • Using standard gauges can result in incorrect headspace (usually excessive).
 
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