I have a couple of .38 revolvers and a few long guns for hunting. I also have a couple of .22 handguns and 3 .22 rifles. My wife and I are going through some very difficult financial times. She has been out of work for over a year and I am on disability. I do have an online job that brings in a little money, but is not consistent. I have thought about trying to build up my supply of .22 ammo for defensive purposes. How well does the .22 rimfire fill this role? It appears to be our best option right now. Thanks!