Don't forget, I would imagine, that Numbing Shot's distance isn't penalized for use within melee range, aki. That + some gear changes could be competitive with Slug.
For sure, and if true this would cut SS lead in half to about 22% better at the higher base damage.
One interesting find where numbing shot could be beneficial. I was looking at the level 80 magian trail for +10% Detonator damage. I wanted to compare this gun to martial.
martial/steel, fSTR =19, 110 AGI --> base damage = 155
anarchy/steel, fSTR =19, 110 AGI --> base damage = 164
fTP martial @ 100 TP: 2.0
fTP anarchy @ 100 TP: 1.5
martial/steel hits 14.5%
harder than anarchy/steel (including the 10% bump) Detonator's dependence on the fTP boost from martial gun doesn't allow it to take advantage of higher base damage weapons as much as other WS.
Now looking at numbing shot:
anarchy/steel, fSTR= 17 (bring back some RACC), 110 base damage --> 189
fTP = 3.0 always
Now here is where it gets fuzzy. Since det has a ranged attack bonus on it (and we don't know if NS does)it is hard to do a direct comparison.
If rattack is capped vs your target, Numbing shot will hit 110%
harder than detonator using the higher base damage weapon and 82%
harder than martial detonator
If numbing shot doesn't give a rattack bonus, and the bonus on detonator doubles your rattack portion of the damage equation, Numbing shot with anarchy will hit 5% harder than detonator with anarchy and martial det will hit 9% harder than numbing shot.
I can see the following:
Any high acc situation: High DMG gun + Slug Shot
Low ACC/Low RATT: Martial + Detonator
Low ACC/High RATT: High DMG gun + Numbing Shot