So I've been using the H&R pardner youth 20 gauge with the 21" barrel for the past few seasons. I've been using a truglo Gobble stopper choke (.565) paired with federal #5s. So far it's basically been a 30 yard fun as the pattern opens up like crazy past 35. Im going to be using apex #9s this year and I was wondering if anyone has a choke recommendation to get this gun patterning good out to 40.