If i'm reading the descriptive text for "Powerful Blast", the only weapons that this talent would not affect are Flame throwers, shotguns and mines... i'm not even sure about mines...
But grenades, thermal detonators and even missiles and rockets would be affected. I guess it's one powerfull power. Am I right ?
Other question :
Does Point Blank increases blast damage, like a grenade thrown at short range ?
Thanks