I've got a Sig 3-9x50 scope on my 338 Federal and I'm very happy with it. It's very clear, lets in lots of light and takes a beating. I've had it on the front gun mounts on my ATV and watched as I was running along dirt roads and trails. It shook as if it was in a paint shaker. I was worried it was going to be shaken to pieces and never hit on target. After getting home I shot it, not expecting it to still be on target but to my surprise it was still shooting dead-on. Passed that torture test.