3" groups at 100 are mostly scope mounting related. It's hard to shoot groups that bad. Do you have any buddies that know guns well and can take a look at it?
I'd save my money on the torque wrench. If you hand tighten the same every time you take it apart, you'll be fine. Rifles shouldn't need disassembling very often
I'd save my money on the torque wrench. If you hand tighten the same every time you take it apart, you'll be fine. Rifles shouldn't need disassembling very often