burris 4-14x32... clearidge 3-9x32,weaver rv9, or weaver v16..If you don't want AO, then a leupold vx1 4-12 and if you choose you could have the parallax adjusted to the distance you intend to shoot most often.
I suggest you avoid 40mm scopes on the light little american. It will look and handle much better with an appropriate sized scope. Furthermore, I usually go lower on power, but the 17hmr can shoot far and its intended targets are usually small. This makes something 9 to 16x useful. I also like something like a fine duplex or varminter reticle.Enough to see easilly on a busy background but small for shooting things in the head.
I have a v24 on my 455 varmint hmr but it is mostly just for plinking and the occasional sage rat or jack rabbit. I have other lower power scopes for hunting.