Plastic bread wrapper tab in the recoil lug recess cured the shifting back-and-forth of the receiver in the stock. Another one at the forward action screw raised the barrel enough to free-float.
Removed scope and tightened bases. Each base had one screw that could be tightened a little less than 1/8 turn. Remounted scope and checked ring screws - snug but not tight.
Put real pressure into tightening action screws - so much that crappy plastic trigger guard now has a crack at the screw - going to have to replace that!
5 different brands of ammo to test: Federal blue box 100gr, Fusion 95gr, Win 100gr Power Point, Hornady 100gr Interlock and Fed Premium 95gr Nosler BT.
Off to the range!
