Any cartridge selection has "wiggle room" either side of it, which is the GACK component popular on the internet.
Also, people love to read an article that praises their chosen cartridge and makes them feel superior in their choice and wisdom on the matter. Endorsement builds following, hence the two ballistic theorem popularized by JOC and Keith.
Then, there is observation that instills opinion.
I "see" 3 thresholds where bullet impact meets a new point in visibility. They are:
1. .30/06
2. .375 H&H
3. .460 Weatherby.
Interestingly, they all approximate each other in velocity ranges therefore the real difference between them is caliber and bullet weight.
