410 Rossi patterns w/ factory choke

[bwhana]

I finally shot my Rossi with Boss Tom  7/8 oz #10 and Burgess Creek 7/8oz #9.5 loads with the factory turkey choke (385). Not great patterns so moving to a Trulock 385 turkey choke next, but would love to hear suggestions to improve these patterns. The paper is about 36" H x 38" W and there are far too many pellets scattered across each.