I have a 7mm-08 encore barrel, 12" length. Brand new. On it I mounted a used 2-7X with lighted reticle thompson center scope. The scope is mounted well, not loose or too tight. I spent some time breaking in the barrel and sighting in the scope. I can get about 3 foot groups at 100 yards while on the bench. What I am trying to say is that it is shooting awful groups. Two different people, two different types of ammo, and still getting 3 foot groups. Has anyone else had these problems? Is sending it back to the factory my best option? Thanks for any input you can send my way.