A lot of people refer to .22's and .25's as mouse guns. Some would even call my LCP a mouse gun. However today I discovered a very good mouse gun. I was out exchanging the memory sticks in my trail cameras. When I finished I stopped my four wheeler at one of my shooting houses just to check it. I probably should interject at this point that when afield I always am armed. Today I was carrying my S & W Model 317 Airlite .22 LR. It is the three inch barrel version. Anyway when I opened the door to the shooting house, I saw four mice in it. I pulled the 317 and was able to kill three of them before the fourth one was able to make it down a hole and get out. And it only took three shots. Nice mouse gun!