Need some help.  I have been monitoring this site for an extended period of time and trust the wealth of experience I have seen.  I am running out of my stash of old white hull hevi shot 6's (4 left).  I purchased a case of the Remington hevi shot 6's, 3 inch, 1 5/8 oz before they were sold out to be my back up shell when the time came.  I am about to go crazy.  I have shot a kicks .650, .660, .665, a remingtin turkey choke and a new blackout choke .660.  The best I had was the Kicks .660 with 130 in a ten inch circle at 40 yards.  Before I bought a second kicks choke (the first is on my sons gun) I would like to know if there was another combination that was used back in the day that yielded better results. 
Thanks for your responses.  Sorry for the rambling post.