I have a leupold 3-9 on my 257 wby. Works fine would not hesitate to take a 500- or 600 yard shot with it. Works fine only have a couple of places where a 600 yard shot is possible. Most are 200 and under,and most of them are under 100. the farthest shot with the 257 was about 200. Deer drop in its tracts. If I was going to focus main on long range I would get at last a 4-12, but never felt under scoped with the 3-9 on it.