I would get a Nikon 3x-9x for it. Then he could leave it set on 3x but if he ever needed ot get more magnification it is there. I have one on my 300 WSM and it stays on 4x for 90% of my hunting. I have no problem shooting it 200 yards on 4X but like being able to zoom in and see what is coming my way and exactly what im shooting.