I pressed Bart for what was the accuracy drop off that caused the competitors to rabarrel, and never got a staight answer. For one thing, he shoots 20 shot groups and does not think in terms of my five shot groups. The best groups with my best rifle have been .6" at 100m, but I average .8". If that average climbed up to .9", I would not re barrel, but I am sure a competitor would. I would not re barrel until the average got to 1.5", and maybe not then.

The NRA published information shows a .308 getting more accurate for 10,000 rounds.

There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. -Ernest Hemingway
The man who makes no mistakes does not usually make anything.-- Edward John Phelps