Just trying to get a lot of sets of eyes on it. Maybe me maybe not someone will spot the problem. Questions may seem weird, we are all just trying to help you.
No shiny spots. Just an outline where the matte finish has been kinda crushed under it.Just to be clear, a scope mount should leave nothing more than a light contact mark in the matte finish of the receiver. It it leaves a shiny spot from rubbing, then the mount is vibrating. Something either doesn't fit properly or isn't secured.
I was going to dump my bi-pod until another forum member gave me a tip - always shoot with something soft under the bi-pod on the bench. So I added a slice of an old rug and the bi-pod shooting improved greatly. He said the bi-pod bouncing off the hard surface of the bench was causing my problems. Hope this helps....+1 I tried it too. Didn't work for me either. I'm a bipod bolt gun shooter.