cut ya some cards from cereal boxes. I drill out the primer then notch the mouth , spin it with a lee trimmer holder , cut 5-6 at the time & punch em out.
some fast powder, varies with caliber, a card ,then tamp it down.
add shot #9 or#10 , the bigger shot will work but patterns will be sparser.
another card , then a slight roll crimp & seal it with waterproff carpenters glue.
Let it dry completely before firing .
Have fun ,Be Safe !!!
PS if ya shoot at hard surfaces such as wood or plywood some shot WILL bounce back.
A qwik shot source is cheap shells from china-mart.
& they work !!!!!!!!