With a 308 Bart Bobbitt shot a 3.2" 20 shot group at 800 yards in 1997 and Krieger put an ad in a magazine saying he used a Krieger barrel.

With a 308 I shot a 0.97" 5 shot group at 100 yards in 2009 with a Parker Hale sniper trainer bull barrel.
I currently own (13) 308 rifles. I am planning to hunt with one of them this fall.

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