should i then get it dialed in real good on my glen dell buck with my 3 blade 100 grain muzzys i will be hunting with?
Yes, see below.
That is true hopefully the BH flies pretty close to your field points. If they do not you can do several things.
1. Find another BH that does fly similiar to field points.
2. Sight your bow into what your BH flys
3. If the difference is not too extreme modify your shot placement to accomadate the difference in field point and BH .
Or (which is what you should do)you could tune your bow wo that both field tips and broadheads impact the same spot.