Don't know but I haven't had good luck with them killing pheasants at that distance. I've had no problem killing them DRT using 7&1/2 one oz target loads with a 20 gauge over a pointing dog but most of those shots aren't much more than 25 yards max.
I made the mistake of taking that gun & ammo combination as a guest to a good sized preserve that supplied the dogs. Bad move, we drew a flushing dog. It was a windy day and the pheasants got out there fast. By the time they were high enough for the dogs safety it was usually a pretty long shot. Plenty of flushes but I only had two knockdowns and they were hit in the head. Guys using #5 or 6 shot did a lot better.
