I think the OP is actually trying to figure out how far his effective range can be based on equipment rather than accuracy and/or assuming accuracy is perfect. For example, there are endless discussions about whether 35# is enough to kill a deer, and while there are always exceptions, I think its safe to say that a 'reliable' kill on a whitetail with a 35# bow and a 350 grain arrow, including broadhead, is limited to no more than 30 yards, with a EXCELLENT high -percentage shot , a well-tuned bow/arrow combo, a very sharp broadhead and a standing still stupid deer. But nobody should be taking a 30 yard shot at a whitetail with a 35# bow unless they are a very practiced and accurate archer, and maybe not even then ( I know I took some shots as a 14 year old I would never condone, now). But that's just one example, and I picked that one knowing the OP is 79 years old and is just getting back to archery. Other than these debates, I dont know of any published reference that says a hunter can shoot at game up to X yards providing he has the right combination of y actual draw weight and z arrow weight. More importantly, these are some of the last questions somebody should be worried about before going out with a stick and string.