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Old January 19, 2013, 10:09 PM   #15
Bart B.
Senior Member
 
Join Date: February 15, 2009
Posts: 8,927
Unless a rifle barrel totally free floated, any pressure on its fore end through its contact point(s) to the barrel will change the whipping dynamics of the barrel. That happens 'cause there's different amounts of pressure and its direction caused by sling tension and angle, force on the fore end from the shooter's cheek pressing down on the stock while the fore end rests atop something (bench, fence, tree limb, rock, etc.). That force and its directions will not be repeatable going from one shooting position to another.

'Course, if one doesn't shoot well enough to see the difference, then such is life. Top level competition rifle shooters don't want any part of the rifle touching their barrels except the receiver's face and tenon threads. However. . . .

One exception is when the receiver's fit to the stock is so poor and sloppy that some amount of pressure between the fore end tip upwards onto the barrel will help. But it's only going to be repeatable when you've zeroed the rifle from a benchrest position with its fore end resting atop something. In the field without a bench and something for it to rest on, it's zero will change.
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