I had a big 10 pointer running a doe under my stand last Thursday morning. Mid 140's 10. 4+ year old deer. He was still locked in there with her Sunday morning. Gone by Monday morning. He spent at least 3 days straight with her. I have trail camera pictures of him alone since. I have a few other big mature deer also alone since. This tells me these mature deer breed less than I've thought. Maybe 4 does during the first rut is what I'd guess if they are very lucky. It's not like they get off one and go right to the next. They have to find one first.