I just got a used Mossberg 535 24" barrel and wanted to do alittle patterning and so I bought the Gobble Stopper Extreme choke in .665 for it. I shot about 8 different loads in 3" #5 and #6 shot. The air temp was about 50 or so degrees. I didnt get very good results at all with this choke/gun. I got the best pattern's with the Rem Premier Magnum #5 and #6 shots and the Win High Velosity #5 3" and the shot counts were still pretty low. I was shooting at 37yrds or so. Do you think a warmer day will make better patterns? I'm not real sure about the choke so far.