I normally have them in the freezer with in a day or so of getting back from the hunt so any hang time they get is at camp. one thing I was told by a coroner is to leave the meat on carcas for at least 3 hours before you bone them out, according to him this way the animal will have time for rigor mortis to set in and the tissue will start to relaxs. I cann't say this is 100% true but everything I've done this with has not been tough.