Yeah, I would be real interested in something like that myself. Heck, since I sighted in my scope on my Remington .17 I have only had one squirrel come into shooting distance, and that one was through small branches and leaves. I fired one shot and couldn't tell if he fell or jumped down from that branch. Course, I was standing in my underwear on the porch (one of the true benefits of living out in the boonies) and didn't feel like traipsing out into the woods to see if there was a carcass there or not. A couple of other squirrels were cursing me in the distance, but they were out of sight.
But yeah, a heavy barreled Ruger 10/17 with an aftermarket trigger and nice low powered Leupold scope would be a real nice toy to play with.
Has anyone tried any bolt action .17 HMR rifles that are especially noteworthy?