If anyone is interested, you can see the night time muzzle flash from the BB #20A out of a 2" snubbie, as well as some other photos I took of some ammo that Hoptob (Mike) sent me for testing with a camera.

More night muzzle flash pics - courtesy of Hoptob

I can promise all of you that none of these shots in the dark, and many others I have done while photographing them, caused any temporary night blindness whatsoever.