I went to bowjackson.com and figured this out....

Yardage : K.E.
10 : 72
20 : 70
30 : 68
40 : 66
50 : 64
60 : 62
70 : 60
80 : 58
90 : 57
100 : 55

I' m shooting a Mathews FX @ 70# 29" draw 28" arrow. 100gr points. I read in another post that Gold Tip states 40 ft-lbs is required for a pass thru on deer and 50 ft-lbs for elk. If that hold true then I should theoretically be capable of passing thru and elk at 100 yards.....I do' t condone shooting anything with a bow that far out, but based on the nubmers it' s possible. Just some food for thought.