I went into the FAQ's in the centerfire H&R section and came up with the following (Which by coincidence I offered as info):
Source for choke tubes for H&R shotguns that use choke tubes?
MSP Ret
posted December 28, 2003 07:10 PM
The Winchoke system of chokes = Winchester/Mossberg 500 series/Browning Invector,
will fit the H&R shotguns that accept choke tubes.
Good Luck....<><.... :grin: