The Firing Line Forums - View Single Post - 7mm08 vs 6.5 creedmoor or 260 in 20" barrel

Bart B. · August 8, 2014, 12:01 PM

Mark, my barrel life numbers are based on the largest groups shot. Any rifle barrel, even those that have 12,345 rounds through them, will shoot a tiny few shot group once in a great while. The tiniest groups happen when all the variables cancel each other out. Biggest ones happen when they all add up together in different directions. The more rounds there are through a barrel, the odds of shooting another group as tiny as the smallest one ever shot increase dramatically.

And all groups fired are zero MOA/inch at the muzzle anyway, aren't they?

August 8, 2014, 12:01 PM	#16
Bart B. Senior Member Join Date: February 15, 2009 Posts: 8,927	Mark, my barrel life numbers are based on the largest groups shot. Any rifle barrel, even those that have 12,345 rounds through them, will shoot a tiny few shot group once in a great while. The tiniest groups happen when all the variables cancel each other out. Biggest ones happen when they all add up together in different directions. The more rounds there are through a barrel, the odds of shooting another group as tiny as the smallest one ever shot increase dramatically. And all groups fired are zero MOA/inch at the muzzle anyway, aren't they? Last edited by Bart B.; August 8, 2014 at 12:10 PM.