CleanAirTurbulence: I have several heavy barrel Rifles in caliber 17 HMR and have been shooting this round (high volume style!) on Varmints and small game since 2,003.
I say "strap on" as much power as you can afford in a good quality variable scope.
On my 17 HMR's I have two that use Weaver V-16's (4 to 16 power), two with Burris 4.5x14's and one with a Leupold 6x18!
Those Weaver V-16's are just wonderful scopes and my "first love" on my first 17 HMR, but the Leupold 6x18 "takes it up a notch"!
And this - don't let ANYONE tell you the 17 HMR is only good for "175 yards"!
Learn the cartridge (wind at distance and trajectory!) and use a good Laser rangefinder and go have some "long distance" fun with the 17 HMR.
Hold into the wind
VarmintGuy