Patternmaster constriction?

[RiverRoost]

Anybody know the constriction of patternmasters classic long range?

[mightyjoeyoung]

There is none. Actually it would be right on what the nominal bore diameter for that gun would be.  They do their magic by way of a "stud ring" just  behind the ports.

[RiverRoost]

Thanks. I shot it with one of my tss handloads and it wasn't impressive at all. Waiting on my sumtoy 562 now!