Triple Se7en

I recommend a simple approach. Buy some JB Bore Paste. Buy a can of Birchwood-Casey 2 In 1 Bore Scrubber and follow the directions for both.

If you do not see noticeable improvement, then dismount the scope and shoot open sights. If your eyes are old and tired like mine, then purchase another scope and go thru the entire sight-in process again.

You never stated what your post range/hunting barrel-cleaning ritual normally is. That Birchwood-Casey 2 In 1 Bore Scrubber controls everything..... lead, copper, carbon and plastic.

I use it all the time. Then I finish with Ballistol on the entire rifle exterior (everywhere).... don't care if the exterior is plastic, wood, blued or stainless..... even the action/slide parts get Ballistol and everything slides easy in Michigan's cold winter. Then I use Birchwood-Casey Barricade Gun Oil or Breakfree Collector Synthetic Oil inside the barrel for long-term storage purposes.