RE: How'd THAT happen?!?!?!
Hey, that's the program I use!!!
Pretty much, whenever a manufacturer says to use 55 Lbs/ft of KE....that means at point blank. they realize than down range you will not be at 55 anymore.
I have also had issue with this 55Lbs minimum for mech heads (rocket suggests velocities...nothing else) does it REALLY take up THAT much energy to open a mech head? I doubt it (gonna do some tests with mech heads, and fixed heads shooting through deer hide to find out for SURE how much harder it is).
According to TAP(The archery progam) With either set up, i'm at about 51lbs/ft @30 yards, and 48lbs/ft at 40.