have shot your bolt
shoot (one's) bolt
To exhaust oneself doing some task and thus struggle to complete it. Try to pace yourself—if you shoot your bolt now, you'll never make it through all 18 holes.
have shot your bolthave done all that is in your power. informal
In this idiom, the bolt referred to is a thick, heavy arrow for a crossbow.
1998 Spectator The Britpop boom has ended, the Spice Girls have shot their bolt.