I was wondering which choke is best for 12 gauge fed heavyweight #7 out of an 870. I've been shooting mag-blend with good results, but I picked up a couple of boxes of the h/w just to try.
One that is known to do well is the Sumtoy 662-3 . The one that is not recommended for the Federal shell with the Flite Control wad is the Indian Creek model that is ported.
I particularly like the non- ported chokes. I have seen good results with the Truglo SSX with this shell also.
There are other good chokes out there including the Remington Super Full choke.