I've shot some 4B, 00B, and 000B out of imp, mod, and full chokes. I've shot some of the 4B out of my turkey tube. The 00 and 000 didn't pattern well enough at any range for any practical hunting use. I patterned the 3" #4 buckshot for coyote hunting, and 50 yards was the farthest that I'd consider it effective for coyotes. That came out of a full choke. The turkey choke was a close runner up. My mod and imp cyl chokes spread it out much too fast.
rw