That is an interesting theory, but I think that it would not have that much pressure on the barrel as to effect the shot groups. And here is my reasoning, the 15-22 is pretty much a free floating barreled firearm. For example, you could remove and cut down the hand guard all the way to the last hole toward the recevier and then reinstall the appox. 1 in of hand guard. You have a fully free floated barrel. The hand guard has no direct affect on the barrel.

Not to say your style of shooting is doesn't work. Each one of us is our own person,