Welll, no........ all's you've "proven" is that it's better to be on the right side with the admins than to be right.Well, my 243 is throwing 108s at 3350 FPS. I really, don't think any 6BR is ever going to do that.
Some pusbucket eliminated my post because "saying the 6BR beats the 243AI is unsafe"
Your 243 throwing 108's at 3350 destroys it's brass in three reloads, if that. (unless you're using small-primer cases in which case you're just a prick)
ON THIS SITE there are many examples and posted loads wherein the 6BR pushes 108's to 2900 SAFELY
And ON THIS SITE when you link to reloading references to the 243AI you will see some of them them max'd out at...oooops..... 2900fps in fact EVERY comprehensive workup from a reloading manual will stop at 2900.....
http://www.6mmbr.com/243Win.html
Sure, there are references to guys running the 243AI up over 3300, I've done the same...... with 20 different setups using 5 different 243AI reamers and multiple barrels and actions. But you will never get caselife because you're running 'WAYYYY over the pressure the 243 case is designed to run. The 6MMBR case is a DESIGNED hotrod, the 243 is not. (altho now you can buy hotrod brass for it

I'm done...... you just keep on running a large-primer case up to 80,000 psi because people say it's OK.
And I'll crawl back under my rock 'fore I get somebody hurt