I'm in the market for a new rifle and my choices are between the 22WMR and the 17HMR. Primarily the rifle will be used for small varmints usually no further than 150 yards. I understand that the 17 is going to be more accurate but I like the idea of the larger bullet with the 22. Those of you will experience what would you go for and which gun? Also, what is the price difference in the ammo?