Maximize your .410’s firepower with Ultra Buck buckshot. ALL of our .410 rounds are roll crimped to insure smooth feeding and easy ejection. These 3” rounds carry 5 balls that are .375” diameter and weigh 78 grains each. Nobody else in the world makes a .410 buckshot this big so we’re calling it, ‘0000,’ or 4/0 buckshot. With a velocity of 1,100 fps these FIVE balls generate more than 900 foot/pounds energy, energy comparable to a .44 magnum. Each ball has similar penetration and energy to that of a .38 special. To put it another way, shooting something with this load is like shooting it with a .38, 5 times, ALL AT ONCE!!! 5 Round Pack, 3″ 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.