Originally Posted by dkf
Low flash powders can really help to cut down on muzzle flash. If I would shoot my outside range handloads (power pistol) at night I would probably go blind. PP is a very flashy powder in many calibers.
Jefferybehr here on GT posted some testing he did with powders at night with the .357sig but I can't find it. Some produced very little muzzle flash.
If you use any kind of light--weapon mounted or handheld--or a crimson trace laser, even the brightest muzzle flash is a non issue.