Local large PD trainer is friend, so I have a fair idea how certain loads (in 9x19, 357 Magnum, 40 S&W, and 45 ACP -- department has since switched to all 40 S&W Glocks) perform at night through multiple guns in front of objective eyes.
More than fair........just not as ready to proclaim absolutes as maybe some others, because I got lots to learn, and I been wrong before. Kinda in the dark, ay?