I own a 1300 my suggestion is dont buy the Under taker choke I get a great tight pattern but for some reason it shoots low & left 6 to 8 inches.
Tried 3 different loads same results. I thought it was justmy shooting thenIhad 2 friends shoot it same thing.Its not the gun it will shoot straight with the chokes that came with the gun but I dont get a good pattern.