Ahhhh...M.T., you're a "stroker", huh?
Still feel that way about Autoloaders?
In particular, this gun has a 2 3/4" chamber with a fixed IC choke. Brand new barrels are available up the wazoo! including screw choke models.
I do have a bit of background on the B-80. Like skeet said, it's like a Beretta 303. Actually I find the 301, 302, 303, series barrels are interchangeable. The B-80 is essentially a Beretta with proof stamps by Beretta all over it. The components are actually manufactured by Beretta, Italy and assembled in FN's plant in Portugal.
One might say this is the kind of Browning that Fabs "might" own!
The action is a proven mechanism and is identical to the 303 and even the more recent Beretta 390. My 390 has never missed a beat. Typical with Browning, this thing has some pretty and shiny wood and nice bluing to match.
Seeing that M.T. is a "stroke gunner" type, I'll take his report with a grain of salt
Just kidding MT, I think you had one of the first as the info I have says it was first manufactured in "late '81" with production running through '88.
Now....to find an empty spot in the safe....this may be a problem!