Shooting pains in the head can be a symptom of a number of things. It can be a migraine headache, ad sinus headache, or head pain caused by a sore tooth.

Shooting in basketball requires your form to be correct, Put the ball in your shooting hand make sure your body is square to the basket, and put your feet shoulder width apart, and also put your elbow in towards your body.
Throwing the ball at the opponents net

It happens randomly

Clay pigeon shooting is OK. Killing birds just for the sake of something to shoot is no good. Or any other animals for that matter.

The shooting of an elephant is illegal because they are a protected species and why would anyone want to shoot one if not for the value of their ivory tusks as the ivory trade is also not permitted.