Sometimes things just don't go as well as planned, so here is my final rundown.
The 2 guns used are both Remington turkey guns an 11-87 SM and an 870 SM, 23" barrels honed, cleaned and polished with trigger jobs and scoped. The distances are taped from the approximate muzzle position of the guns. My goal was to decide once and for all if I would continue to try to hunt with the Federal heavyweight #7s. Up to this point the best pattern with this load had come from the Remington HD turkey choke (.670) that came with my gun. I purchased the Trulock Federal Heavyweight # 7 choke having had several recommend it. I had decided that if I could meet or exceed the patterns I got from H-13 #6 at 40 yds. I was sold on the Federals. There were at least 3 shots fired through each choke w/ the hwts the best of each are shown. Here are the results:
870SM Jellyhead .665 3.5" H-13 2.25oz. #6
10" 20" Total 40yds. 192 163 355
870SM Trulock HWT 3.5" Fed.hwt 1.75oz#7
40yds. 136 174 310
870SM Rem. HD .670 3.5" Fed.hwt 1.75oz#7
40yds. 155 171 326
11-87 Trulock HWT 3.5" Fed.hwt.1.75oz#7
40yds. 175 164 339
While these numbers may not look bad, the patterns through the Trulock choke were not pretty, strings of shot and lots of large 2-3" holes in the 20# circle, I believe they are simply over choked. The pattern through the Remington choke were more evenly distributed, but still not what I want.
Now for the load I will be hunting with again this year, here is a comparison of the .660 & .665 JH in the same Rem. 870 SM:
870SM Jellyhead .660 3.5" H-13 2.25oz. #7
10" 20" Total 40yds. 287 200 487
870SM Jellyhead .665 3.5" H-13 2.25oz. #7
10" 20" Total 40yds. 226 228 454
I hope this helps somebody!!!
