RE: Floating a barrel?
There are a few types of bedding.
Glass bedding simply means that an epoxy is poured into the stock , after removing wood to make room for it, and setting the barrelled action into the epoxy. Once hardened It has formed a "glove" in the exact shape of the receiver. This keeps the receiber from shifting around any while it sits in the stock.
Pillar bedding means that where the action screws are located the wood is drilled out and aluminum or steel pillars are epoxied into place. This gets rid of the metal to wood to metal contact in a rifle and creates a metal to metal to metal contact system. This is done because wood is somewhat spongey when it comes to sightening it between two pieces of steel. It also lets a person tighten the action screws the same way each time.
Then you have a full length bedding block. This is essentially a block of aluminum bedded into the stock and machined to the exact shape of the receiver. This accomplishes both of the bedding types in one. It also runs the length of the forearm and creates an ultra rigid stock.
All of these can improve accuracy simply by not allowing the receiver and barrel to move when shooting.
Floating a barrel simply means that when bedding or by simply removing wood in the forearm the barrel does not tough the stock anywhere. It eleminates all pressure points between the stock and barrel. Any time anything touches the barrel it changes the harmonics of the barrel while the bullet is traveling down the bore. When the harmonics change bullets tend to go in different directions.
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