Twarted by the common red squirrel! I took delivery of my Isaac Haines .40 flinter last February and could hardly wait until squirrel season opened this fall. As luck would have it, the hard mast crop in this area was a total failure with an almost total absence of acorns, hickories, and walnuts. The local squirrel population has pretty much moved on to greener pastures. My goal for the year had been to take a Squirrel Grand Slam, killing all 4 kinds found locally, in the same day. I was out yesterday and killed a gray, a fox, and a black within the first hour and figured I had it in the bag, only needing the very common red squirrel. I hunted a total of 3 hours in 3 different spots and never laid eyes on one of the little rodents. The .40 has been doing a wonderful job on the ones I have been able to find, the total being 7 with 8 shots. The really hard part about getting the Slam is being able to get a black and a fox on the same day. The gray and the red are usually gimmes. Probably not many areas in the country where you can shoot 4 different kinds of squirrels in the same day. As you can see from what's left of the head of the gray, the little .40 is nothing to sneeze at when it comes to whacking a squirrel. I doubt a .22 mag would have done any more damage.