>>408783884
IMO Pavlov scopes are one of the few I find usable. The viewport from the scope is the same as your eyes so the magnified crosshair converges with your regular view, you can just aim with both eyes open and line the crosshair up.

>>408389835
Annoyingly not Sniper Elite because despite being an entire game about sniping, the scopes work terribly since it's a camera view rendered from the gun's point of aim with an ocular shadow mask.