That Colerain turkey choke barrel is awesome. I load mine with 1 1/4 oz measure (80 grains) of FFG powder, 2 card wads 1/8 inch thick, 1 1/2 oz measure of shot (#5 or #6) and 1 over shot card. It will put about 100 shot in a 10 inch circle at 30 yards. I built my gun as a smooth rifle, with sights, so I can center the tight pattern on the target. I'm sure you'll enjoy your gun. Darryl