Are the Remington factory 20 gauge lead only and hevi approved chokes the same as a Carlson. They look the same to me but I am not sure. I know one is a .575 and the other is a .572. Was thinking about trying a Carlson's .575 but no need if they are the same choke.
My Remmy 'lead only' choke mics at .572 and shoots everything but steel just fine. Not sure how similar to the Carlson.