Small Game, Predator and TrappingFrom shooting squirrels in your backyard to calling coyotes in Arizona. This forum now contains trapping information..
.17HMR all the way. more accurate, more powerful and the casing is like 2 times longer than the mach 2. if ur gonna shoot yotes u need to stay w/ the magnum.
The HMR is based on the 22mag case, and the mach2 is based on the 22lr case. If you would have just said squirrels, I would suggest the Mach2. But with the bigger critters, definitely go with the HMR. I would just suggest you use the 20gr expanding bullets for the bigger stuff. Squirrels it really doesn't matter because you should head shoot them regardless. So I would just use which ever shoots best out of your gun. My only other advice is consider the cost of ammo. Ammo runs right around $10/50. You can find it cheaper, but don't count on it. If that is too pricey you might want to consider something else. Good luck.
22mag & 17hmr both run pretty close in price range. As for the range of shooting a yote, I would limit your shots to 100 yards max. Beyond that and penetration will suffer and not be adequit for humane kills reliably. If you want a gun to shoot out to 200 yards you need to step up to something with more oomph. Good luck.