Please do not attempt to shoot a big cat yourself. A wounded animal is extremely dangerous. People have been threatened. Vehicles have been sprung upon. In three cases people have been hurt.
Normal behaviour is to avoid direct human contact.
Their initial reaction has been to run off when surprised. They have an astonishing turn of speed. If their escape route is not blocked, all has been well. The more that they live with human populations, the less frightened of people they will become. Inevitably somebody will get very hurt.