What we have here is a slight miscommunication, English is wonderful for that.
One person says "chamber checker" when they mean "cartridge checker" or gauge. Another says "cartridge checker" and says you may think of it as a go /no go gauge (because it works the same way pass/fail.
And others think it is being
called a go/no-go gauge which it is not, in the industry accepted use of the term which refers to gauges for checking the firearm headspace, NOT the ammunition.
SO, Gentlemen, please, cool your jets, and figure out how we can all get on the same page with our terms, otherwise we cannot communicate effectively.
My standard for firearms and ammunition terminology is the definitions and glossaries in firearms and reloading manuals. Pretty sure that also what SAAMI uses, overall. But, people are people and some of them will use terms as they define them, and define them differently than the standard references.
One of my personal gripes is people posting how they are loading to the bullet ogive. They are and are not "loading to the ogive". They are loading to a specific point ON the ogive, as by standard definitions the ogive is the entire sloped or curved portion of the bullet. Ogive is NOT a specific point.
My point is, if you don't use terms the same way the rest of us do, if you don't use terms the same way the standard technical references to, we have a hard time knowing exactly what you are talking about.
And, if you refuse to use terms the same way we do, once you have learned their correct usage, that would make you a candidate for employment by MSN/NBC