sbrmike,
As has already been asked, what's he going to use it for?
A "rimfire scope" can either be a scope with the parallax set around 75 yards, or a scope with parallax adjustment. The first is pretty useless for a .17 HMR, since the HMR works at centerfire ranges. The second can be useful, especially if hunting small game at ranges under 100 yards.
My .17 HMR is primarily used for shooting small varmints here in Montana, ground squirrels or prairie dogs. It used to have a 3-9x Burris Fullfield II with Ballistic Plex reticle, which worked fine, but then I got the urge to use it once in a while for head-shooting tree squirrels and put on a 3-12x Cabela's with a side-knob for parallax adjustment.
