I have a nice mosin 91 B marked barrel rifle. Shoots nice 3" groups with surplus ammo, would do better if I could actually see the front sight! I'd like to put a scope on it. What's the best, no alteration scope mount? Do I need an extended eye relief scope? I am wondering if a 4x extended eye relief scope (marketed as a handgun sight would do the trick?Not looking to change to bent bolt. Thanks for any tips.