Will be nice when I'll can see time to kill and bullets to kill in shotguns.
Shotgun calculation is a bit more complicated as other weapons because there no "bullets", you have projectiles per shot and you have a spread (cone) for the shotgun.
Working on it. Trying some math algorythms.
Added some numbers to the next release (on homepage already available).
This data definitly NOT show the real ttk, but you can use it for comparison.