Circle Fly 10 Gauge Overshot Cards 0.025" (1000Pk) (CF10S)This wad is used to hold the shot charge in place in muzzle loaders and roll crimped shotshells. In modern shotshells, it is useful when placed over a shot charge before crimping to ensure flatter, tighter crimps. This is a very lightweight, but stiff card, made from coated stock and lends itself to being used for loading blanks. More information about loading data can be found here.