Re: Best cal.
All are fine for the application, however as stated. 22lr bullets are roughly 20.00 per 1000, as compared to 15.00 or so per 50. I personally use a bengiman Sheridan 177 cal air rifle, 1000 fps. for small critters, just a lot of fun and quiet also. Except for pumping noise.
"The 2nd Amendment is my "concealed carry permit"" Ted Nugent