Related Clues:

• Projectiles
• Target practice need
• Rifle filler
• 33-Down supply
• Cannonballs, for example
• Stuff loaded into a barrel
• Bullets, for short
• Bullets, bombs and shells, informally
• Shells or rockets, for short
• It may be measured in rounds
• Shells/such
• Peas, to brats
• Some rounds
• It's fired
• Bullets, arrows, etc.