I assume you are interested in a pattern for coyotes, if so here is what I do. I have a lifesize coyote cutout. I buy a roll of construction paper, cut it in 4 ft lengths, place the cutout on it and spray paint the outer edges. Place a spotter in the heart lung area. At whatever distance I place the target I want a minimum of 5 pellets in the kill zone. No hard fixed rule but that's what I want. If pushing beyond 40 yards, I am reluctant to go smaller than #4 buck lead, heavier than lead maybe one size smaller but I am of the bigger is better school, others go with more pellets is better, your choice