An idea that ammunition manufacturers have been playing around with for several years now is putting two different shot sizes into one shotgun shell for more effective hits on game. Specifically, we have been seeing this with turkey shells. Two distinct payloads that deliver effective hits at varying distances for hunters. Now, Remington is applying that same type of methodology to waterfowl hunting with their newly reborn Nitro-Steel Duplex shotgun ammunition. Read more about Nitro-Steel Duplex from All Outdoor below.