If you have a known, (.570 tube) and know your limits, I would take that over an unknown .555 tube. The other thing to consider is the POA vs POI. Changing chokes can change the POI big time in a turkey gun, seen it too many times.
I would go with the known and limit my shots to what the pattern will support.
Sage advice.
My pattern wasn't really bad, but its certainly not the typical bragging board.
I'll screw the more open one in.
Side comment... theres a you tube hunter Dave Owen that runs a more open choke because he gets them in closer than most and he wants more margin of error. I suspect thats why I purchased the 570 choke. Or it was on clearance.
