Standard patternmaster chokes (waterfowl steel) have a very slight constriction....but have "studs"on the inside portion of the choke that grab or retard the wad .....I e never used one but goose/duck hunters love them
They dont have any viable usage with Turkey loads, I would not recommend them in that manner nor would anyone know if they would be safe or perform well
Pattern master has several other types of chokes that are completely different, and some are constructed for Turkey loads ...how they perform, I dont know as of yet
