The 12 Ga. Blank Round is Fold Crimped for extra volume and an extremely loud report. It is recommended for outdoor use. It's practical use is for animal control and as a signaling round. 5 Round Pack, 2 3/4" Round. Ammo purchasers are responsible for use and compliance with all federal, state and local laws. Free shipping on ammo orders over $250. Ammo is shipped by UPS Ground Only.