I found these online and the 3 pack is available at Dic ks sporting goods (we have one in shreveport). The 3 pack has a IC (not Indian Creek) Modified and a XX full. The constrictions in the pack i would get are 0.720, 0.710, 0.670 I think this would be good to try with my Fed HW #7 and also with HS Mag Blend. The IC or Mod would work with the Fed and the XX with the HS.
here is the link to the information about the chokes package.
http://pro-factor-chokes.com/
I believe they're made by mossberg. Probably won't hurt to try them. I don't know how the fed hw's would do with the ports in the chokes.
Shane
yep mossy chokes
a couple of hunting buddies have some of them,seem to be pretty good chokes