Take a deer
A .22 will take a deer. Not ethically, though. The .30 M1 Carbine was the rifle I started carrying to hunt deer with. I carried it until I saved enough money to buy a .30-30. In retrospect, I don't think it was enough gun for an inexperienced hunter to be carrying. I had one chance at a decent shot at a doe with it one year. My brother and I were walking down an access road to a small blueberry field when we spotted a doe with two fawns. I laid on my stomach and crawled up the road to get into what I figured was decent range for the M1 Carbine. Put the crosshairs on her throat, fired and watched all three deer run into the woods. The bullet kicked up dirt in front of her by about 20 feet. Come to find out, the scope mount screw on the side of the front of the mount was stripped out and the scope was loose. The scope was high on front. Would have been neat to tag a deer with that gun but still stood a chance of merely wounding. I'd use it to hunt rabbits or other small game but I'd shy away from it for deer.