20 Guage Buck and Ball round is loaded with 8 #4 buckshot and a .58 caliber 279 grain musket ball. This is an excellent defense round. 5 Round, 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.