Launch your first pig with the aim to touch the higher bone structure. This shot can be tricky and may take you a few tries to succeed.
Power Activation Point
For this shot, you actually want to activate your power some time in mid air, the timing should be well before you hit the target. Consider tapping for the power around the time shown in the picture.
First Shot Result
The birds are killing on impact. Some of the falling pieces on the chain trigger the bombs on the bottom. The explosion picks up the rest of the birds on the bottom left. You then will get the three star mastery after all the birds are dead with this single shot.