Originally Posted By: JDW
..the barrel is resting on only 2 points on the rod, one 4 3/4" from left hand stop and the other at close to 24" from stop on left. This way it is away from the chamber and forcing cone and on the 24" is away from the start of the choke area...

So, do you measure the wall thickness at the chamber? The problem barrels I have found mostly have had the chambers lengthened.

Pete