looking for sum help with loads used in blk powder shotgun . I use to use equal equal rescipe lead to powder with a tad more shot good patterns on paper plates at 30 yds. I want to shoot bismuth for ducks would I add more shot to make up the weight of lead that I'm substuting. I'm using rs pyrodex for powder and 11 cap in 26 in double barrel gun. I have loaded steel to hunt ducks but didn't like it. thanks rick