I am shooting 303 brass, not ammo.
The rim dia, rim thickness, base dia, and length or 303 Brit and 30/40 Krag are close enough.
I have a number of 303 Enfield No 4 rifles.
I have been soldering shims on the bolt faces to get the headspace to match rim thickness.
I am not the only one who figured that out and started doing that.
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?