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View Full Version : A rifle bedding question...


ripcurlksm
06-22-2009, 11:15 AM
I understand that bedding a rifle's receiver to the stock improves your shots, but I dont understand why it improves groups.

Lets compare two elements:
(1) receiver, barrel, sights
(2) stock

When you aim the rifle, its the receiver and barrel and sights that are used. Lets say you have a loose fitting stock where the receiver moves around a little. The part that I dont get is that every time you fire a shot, the receiver may shift positions as it lays in the stock, however its the receiver, barrel and sights in the end that you re-position to get back on target-- not the stock.

As I type this, I suppose that if you have a loose fitting stock, the advantage of bedding is that there is no movement when a round is fired. Is it this movement in the stock WHEN the shot is fired that throws off the shot?

Brutish
06-22-2009, 11:34 AM
As I type this, I suppose that if you have a loose fitting stock, the advantage of bedding is that there is no movement when a round is fired. Is it this movement in the stock WHEN the shot is fired that throws off the shot?

http://www.waynewhitecoop.com/system/images/Light%20Bulb.jpg

RugerNo1
06-22-2009, 12:28 PM
*BING* :yes:

BigRich
06-22-2009, 4:17 PM
You are also trying to achieve a stable point in the barrel vibration harmonics. It is impossible to tune for a variable so you eliminate them by making the receiver stay in exactly the same place in the receiver all the time. You also want to eliminate any changes in pressure on different parts of the receiver and barrel. This is one reason for the popularity of synthetic stocks. wood expands and contracts with changing humidity, synthetics do not. All the elements work together in the process. Pillar bedding, glass/epoxy/metal bedding, floating of the barrel all add up to leaving the mechanical accuracy of the barrel and receiver as the remaining question. Now add the skill of the shooter and the accuracy of the ammunition in. If your receiver is actually moving in the stock you will end up with a plinker at best.