As far as certain rounds being barrel burners, a lot of it has to do with the users of the rifle and how they are being used. If you shoot like people in F-Class, then yes, you will burn the barrel out. But if shoot and let the barrel cool down, then the barrel can last a long time.

I've seen Mini-14 barrels being burned out by being over-shot and not being cooled down and not being cleaned. But then again, there are members here who have 26,000 rounds down a 223. Its all about how you take care of the rifle. Just my .02