flared gas seals to conform tightly to shotgun bores wads are tall and tough enough to ... 1/2 1-5/8 oz steel 100 119-424 11.29 winchester shotshell wads winchester shotshell ... while providing a positive seal in the barrel 410 bore wad type color quantity . ... bpi nitro cards nitro cards are used by shotgunners between the powder and the shot or as ...