Related Clues:

• Soldier's need
• Rounds, for example
• Spitballs, to class clowns
• Bullets, BBs, and shells
• Howitzers
• Peas, to a prankster
• Ammunition, slangily
• Stuff put into a barrel
• It fills barrels
• Reloading need
• Bullets, shells, etc.
• Spitballs, e.g.
• Fire from a heater?
• Projectiles
• Target practice need