I ordered the indian creek choke for my 870. I would like to know which hevi load is best to try first. I am thinking hevi 13 #6 or magnum blend. I am hearing better patterns on web with hevi 13 #6. Is hevi #6 equal to lead # 5. I though about going with hevi 13 # 5 but think extra pellets in #6 will be more beneficial. Hevi shot is too expensive to try all combinations so I want to try most recommended vs lead first. Would like to hear from people with experience with these combos.