If that deer weighs 65lbs as you said, you should get right around 50lbs of meat, maybe a little less. My elk (cow) weighed 225lbs with hide, head and guts removed. I got 165 lbs of meat. You can figure to get about 1/3 of the live weight of an animal, and about 75% of the rack weight in boneless cuts. If these weights are coming out different for a properly proportioned deer, then something is wrong. I would just butcher it myself if I were you. I have not been away from one of my animals being butchered. I've been there the whole time.