I'm not sure I entirely follow, but if I understand you right, then yes. I thought Epic Strength carries over for damage in the same way for Melee. Like, if you have E Strength 4 then you'd get 4 extra dice on a Melee attack. I could be totally wrong on that, but in general whatever bonus you get for E Strength to Melee you get for E Perception to Ranged. :)