Although you can use the normal .75 bess loads of 80 grains of FFg and up, because of the lighter weight of a blunderbeast I'd recommend going with about 60 grains. Out of my old honker, it tossed most of the junk I chose to stuff in it just fine. yes, I had to try all the stuff you hear about in old tales including small stones, glass, nails, links of chain and even marbles...to be honest, marbles just came to me in fevered fit. They did turn to dust when shot against cement! Whee! :youcrazy: