Before you do all that take one of those palstic clips used on bread wrappers or a piece of credit card and place between the front of the action at the screw and stock. This would lift the barrel and get it away from the stock. Tighten the action screws down and then shoot it that way.
If it is the last two shots of 5 shot string,the barrel is probably warming up and expanding just enough to have the stock put pressure on it.
Just make sure it isn't too warm a barrel by itself though.
I know a lot of guys that have dianosed their problem like that and then never did anything more other than leaving the plastic shim in there.
Last edited by saddlesore; 04/25/15.
