Custom-Made Armor has no bullet protection and Improvised weapons do no damage.

[Noah Buttes]

The improvised weapons were broken before the rework.

Shit, I should've included a fix for that.

But uh, the reason your armor isn't protecting against bullets is that you don't want compressive strength for bullet resistance.

armor_value_bullet = material.hasProperty(PROP_SHEAR) ? max((material.getProperty(PROP_SHEAR) - 50) / 25) + 1 : armor_value_bullet

You want shear strength.