So legit question. You have the best tools EVER designed and actually machined to measure CBTO. The tools insure 100% zero drift and alignment to bullet ogive. You are equally trained in correct and proper use of the tools.
1 - How do you know how "true" the entry to the lands are at the exact time you measured for CBTO?
2 - How do you "accurately" measure the uneven wear to the throat from normal shooting?
Asking for a friend.
(1) You don't
(2) You don't
I know that was a highly detailed and exacting reply but I promise I didn't use AI to write it.
I'm not trained in the use of gauge pins, inside and outside mic's, and other, but not all, precision measuring devices and I still learned how to use them correctly. To me training says classroom / books / teacher. I learn better by doing and watching someone that knows what they are doing. Oh, and screwing up.
If you do something the same way and get a good result every time, until something changes, you should get a good result every time. That means you aren't likely to get the same result every time if you measure the result with ultra high precision.
We are trying to hit a target with high accuracy and repeatability, with a chunk of metal that is designed by a human (with a computer?), that comes off of a machine that makes chunks of metal at a high speed, by setting off a chemical explosion inside of a piece of brass stuffed into a chamber. The results of the explosion (combustion) shoves the chunk of metal out of the tube with "spinny things in it" into changing temperature, pressure, density, and movement. Add the human factors and the recipe goes all to he double toothpicks at the highest resolution you can analyze it.
Ain't this fun!
PS - I still like my SAC comparators
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