my FOC is 10.6% using 29" Easton 2314 aluminums with 125 Grain Broadheads I am curious as to what might happen if I switch to 100 Grain Broadheads any thoughts.

I am also thinking of switching to mechanicals Draw length is 29" and 58# draw
is that enough KE to justify the switch to mechanicals Where can I find the formula to calculate my KE?

Any help would be much appreaciated
Thanks