Thanks guys I shot #4 last season and they worked good.I was using federal mag shok turkey loads. I noticed that the shell unfired was about a little less than an 1/8th of an inch longer than the winchesters I was comparing. The winchester cycled flawlessly they shot alright and popped out of the gun when I tried to load a second shell. The federals cycled fine but after I shot they wouldn't come out of the gun because the spent shell was too long. Luckly I killed my turkey with one shot but a second shot would have been impossible.