One of my hunting buddies (patterns the gun with me each spring) shoots a BPS and uses 3" Magnum Blends and a Hevi choke and gets 230 to 245 at 40 yards; nice even patterns.
He gets better patterns with Hevi 6s, but prefers the Mag Blends for his own reasons. I don;t argue with hime as the 230s with the MB is more than adequate.