410 slugs put a single lead projectile into the shotshell. The heavy projectile has tremendous knockdown and penetration power. Initially, the slugs were simple round lead balls. Today's slug ammunition has come a long way! Now shooters can choose jacketed and polymer tipped "slug" ammunition for their "scatter guns." Some of the slugs are even for use in rifled barrels and are able to achieve rifle-like accuracy out to 200 yards! The 410 shooter has a number of factory-loaded ammunition offerings from which to choose even including hollow point rifled slugs for sale.