Like I told you before r33h, the hevi 13's didn't do well for me with the jellyhead. The Rem. hevi shot mags. outperformed the rest. Hevi 13's are good, they just may not do well with the jellyhead. I would try the Win. Xtended. Also you can get an undertaker hevi shot choke for under $25.00. You may want to try that with the hevi 13's. I have one and it works just as well as the jellyhead.