Anyone suggesting shooting a cat is a complete irresponsible moron.
Not only is it killing someone's pet it's also,illegal and giving people who who use airguns legitimately a bad name.
Just out of interest,what's a legitimate use for an airgun?
Target shooting be it at paper targets, metal targets (spinners, knockdown targets etc) or what's known as plinking, shooting match boxes, tin cans, bottle tops, bottles Anyang your imagination can think up.
Theres also competitive shooting, with Field target and hunter field target, which are both disaplines which involve shooting at metal knockdown targets at various ranges, you have to guess the range and get 2'pointsmfor knocking the target down. Ft is mostly shot from a sitting position hunter field target mainly from the prone position.
And there's hunting, shooting pest species that are on the general licence ie rabbits, pigeons, magpies, crows, grey squirrels and rats. They are all shot to control there population in which large numbers cause massive damage to crops, trees, songbirds, property, and livestock. The damage caused by rabbits alone is unbelievable, and most of the pest species were introduced to the UK at some point and now cause massive damage, grey squirrels being one of the worst, they are also responsible for the demise in our native and endangered red squirrel.
It's a touchy subject hunting, but until you have seen the damage caused by pests you will never understand why it needs doing.