What I do for Rem 700 barreling is print out this sketch I made, put it over the lathe, and cross out all the numbers and put in the right numbers for that rifle in red ink.
For my belted magnums; 7mmRM, 300WM, and 338WM, I heaspace at .215", because I can't find any brass more than .215" from the case head to the end of the belt.
Obviously if you are building a rifle for someone else and don't have an understanding with them, you have to headspace at .220" and make it SAAMI kosher, but I know what I want.
The word 'forum" does not mean "not criticizing books."
"Ad hominem fallacy" is not the same as point by point criticism of books. If you bought the book, and believe it all, it may FEEL like an ad hominem attack, but you might strive to accept other points of view may exist.
Are we a nation of competing ideas, or a nation of forced conformity of thought?