Winchester's Bismuth Shells deliver the tight shot patters and heavy hitting performance that avid waterfowl hunters demand. They feature a buffered payload that provides 50% more pellets in a 30" circle at 60 yards when compared to non-buffered bismuth payloads. Because Bismuth is softer than steel, these shells can be fired in properly functioning modern and classic firearms. Bismuth also has more density than steel, making the pellets hit harder. Additionally, the Bismuth shells feature a Lacquered primer to protect the powder for moisture. Features of the Winchester Bismuth Shells: Buffered payload and consistent-size shot provides 50% more pellets in a 30" circle at 60 yards when compared to non-buffered bismuth payloads MAXIMUM VELOCITY - Two-piece wad system ensures a tight gas seal PRECISION BISMUTH SHOT - Ductile shot material can be fired in properly functioning modern and classic firearms SUPERIOR DOWNRANGE ENERGY - Bismuth shot has more density and hits harder than steel WATER RESISTANT - Lacquered primer and double seal wad keep out water Winchester 12ga 3" #1 Bismuth 1-3/8oz Shells Box of 25 SWB1231