Check out this page: The Box O' Truth #3 - The Shotgun Meets the Box O' Truth - The Box O' Truth
They discuss bird shot toward the bottom of the page.
Nice site, Gary. Good to see that some people are doing some real-world tests on these things! 
Lots of interesting stuff there.
Back when I kept a revolver in the house, the first load up was a birdshot cartridge. Figured if I hit them in the face, at least they wouldn’t be able to see me! :eek:
Yeah, count me in on the wantin’ of this super nifty gun. I really dig the leg holster shown farther down the page. Hell yes, I AM Snake Plissken now. Gotta go dig out the eye patch…
I remember that gun. I ran around with it in GTA: Vice City, until the cops took it from me. Time to go back to Ammu-nation and get another.