Hi! Dev here. I apologize for the frustrations this cause. Bolters can crit. Rest assured that’s the case.
To explain a bit more. We have a bug currently in the Psykanum that the color of the damage number that pops up is incorrect some times even if the attack crited. So you crit you will give higher damage, but the color of the damage number is still white.
This is the case for all bolter hits that hits more the 5m away from the enemy. So beyond 5 meters you will not get a yellow text but you will do more damage when you crit.
Why 5 meters? After 5 meters bolters shots gets “armed” and if they then hit they will cause a secondary explosion that will stagger the hit target (even more) and stagger enemies around it also. This secondary explosion does not crit and the damage number system hence think that the whole attacks (primary + secondary) is not a crit and will display a white text.
This have been internally fixed and will go out with next patch.
I will make an extra check to see that the perks and blessing all work correctly for the bolter also just to be sure.