I recently picked up a Remington 1100 Trap. It is the bicentennial receiver and trap stock, but the barrel is not the normal 30” Trap barrel that came with the gun, its a pretty unique item. Although I have several older 1100 trap barrels, the price was right so I took the barrel in the deal. Wondering if anyone knows the history. It is factory Remington and allegedly has not been altered.... Its a 28” remchoke with the stepped rib. BUT... it has some sort of unique taper before the choke tube. Using a cylinder choke tube ... it throws a pattern similar to a full choke!! I haven’t got around to measuring the bore just yet. Anyone heard of this?