Remington 20 and Fed HW 7s - magic constriction?

[PALongspur]

What has everyone found to be the best choke constriction for Federal 7s out of a Remington 20 gauge? Thanks in advance! 

[savduck]

They vary per the gun.

Many get good patterns out of the 570 chokes, a pile get good ones from the 562, and some get good ones in the 555 range

[R AJ]

Just get a Sumtoy and be ready to shoot lead or HTL through it.

One choke - one price- done.

[goblr77]

A Sumtoy .562 5 and a TG SSX .555 have worked best out of mine. A lot of guys have success with the more open RSF chokes but my gun didn't like them at all.

[jbrown]

I'm shootin a 20ga Benelli M1 with a sumtoy 562-5 with great numbers from Fed HW #7's and Hevi13 #7's.

[st8tman]

Last year I had the same dillema and tried several chokes with no real "winners"! A gentleman named Clark on this forum turned me on to the SSX .550 and it was "Magic" to say the least with my son's 1187 and Federal Heavyweight 7's. I realize all guns have their own pecularities, but it seems this recipe has proven itself time and again in the Remington 20's. Here is a supporting article that may be of interest to you. Good Day.

http://allaboutshooting.com/article_info.php?articles_id=300