FAQ

Why is it not a good idea to leave a light coating of oil in a rifle chamber? It seems to me that it would help to prevent rust.

You are right in that it would help to prevent rust. However, it should be completely removed before the gun is fired. If not, the oil acting as a lubricant will not allow the cartridge case to expand properly and adhere to the walls of the chamber. All of the pressure and thrust from the cartridge case will be directed to the face of the bolt and the bolt lugs. Under some conditions it could cause the bolt to fail or damage the bolt.

Tech Number: FAQ-000-000-00045