I don't shoot much game with a .22, prefering my 25-20,.32-20 or .38 Special. I keep a .22 in the truck and in the barn though and shoot a ground hog or rat from time to time. For factory stuff, I really like the Winchester Power Point, very effective on ground hogs! Wouldn't figure on using them on anything edible though. Some years back, Paco Kelly over at leverguns.com came up with his accurizer or whatever he called it. Basically, it's a little jig that lets you file a flat point on round nose ammo. I use cast bullets for all hunting and have seen many times how effective a flat point is. I filed a flat point on some "milk carton" promotional ammo and tried it vs. factory round noses on jugs of water. Big difference in the splash factor. Want a permanant record? Shoot a bar of soap. I did this when training our Scouts - when they passed it around, sticking their fingers through the hole, you could see in their eyes the new respect they had for the "power" of that quiet little .22. Shot a few ground hogs and some squirrels that fall with them and found terminal performance much better than solid or HP round noses. Bet with a body shot they would do a good job on grouse and leave you something fit to eat. I envy you having them around to hunt - the very few grouse (ruffed) around us don't sit around for a shot, it's a shotgun game only. An outfitter I hunted bear with in Quebec said they walked or rode the logging roads in the fall and shot them sitting with shotguns. I'd like to go back up sometime with my old Savage M/24 (my first gun) just for that. File a small meplat on some .22's and give it a try, you might be surprised.