I think the suggestions of the 2-7 power range make a lot of sense, but my nomination for
all-around best rimfire hunting scope at a reasonable price would be the Leupold Ultra-Light VX-2, 3-9X33 mm. EFR:
https://www.leupold.com/hunting-sho...ght-riflescopes/vx-2-3-9x33mm-ultralight-efr/
I have this scope, and it is really ideal for a rimfire rifle, measuring only 11.6" long, weighing only 11.5 oz., having an objective bell of only 1.8" which allows a low mounting, and giving you a 38.3 ft. FOV at 100 yards when set on 3 power. The EFR feature allows you to focus it (and dial out parallax) down to 10 yards. For grouse potting, I'd set it at 3 power and set the focus to something like 15-25 yards.
Available from Grouse River in Kelowna:
http://www.grouseriver.com/Leupold-VX-2-3-9x33-EFR-Rimfire-Riflescope,
or look for a used one at a better price.
Edit: I nominated the Leupold 3-9 EFR as the all-around best rimfire hunting scope at
a reasonable price, but for the all-around best rimfire hunting scope
at any price, my choice would be this:
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It's the March 1-10X24 mm. SFP hunting scope. Except for weight (18 oz.), it has ideal dimensions for a rimfire scope: only 10.3" long, with a 1.30" OD objective bell. This would allow very low mounting. At 1 power, the field of view at 100 yards is 105 ft., and it has focus/parallax adjustment down to 10 yards. It's available with many reticle choices. The power range of 1 through 10 covers all realistic rimfire hunting situations. March scopes have ED lenses, and the clarity and brightness are noticeably better than with scopes having lower-quality lenses--like Leupold (not that Leupold optics are bad).
I only mention this scope in the interests of completeness--or for the guy for whom price is no obstacle (no one I know!), and who wants to build the ultimate rimfire hunting rig. If you happen to have about $2600-2700 flopping around in your pocket, and you can get this past your significant other, you too can have one in the non-illuminated version (which is the one I'd get).
