I have tried to find a choke that will pattern well with them through my 870 and so far I have not. Inside of 35 yards it is barely OK with a mod, beyond that it got pretty bad.
I have tried imp cly, mod, full, and xfull and I gave up. I like the load, especially for foxes, but not the pattern. I went back to #4 buck.
Some guys say that they get good patterns but that has not been my experience.
And lately they have been pretty hard to find. None on the shelves locally in my area.