Post your wisdom

Before you squeeze the trigger, slowly exhale.

As the last of the air leaves your lungs, squeeze.

Greater accuracy is achieved.

Cleaner kill, every time.

I'd say let the shot off at half way. Exhale, hold, bang, exhale.

In prone position, move your hips to change the point of aim, which will move diagonally over the target as you breathe. It should be on the centre mass of the target half way between the top of the breath and the bottom.

Remembering the 4 marksmanship principles, in your own time, carry on....