Venison and pork have a high protein content, what that means is after you take it off the grill or out of the oven it will continue to cook for about 5 more minutes. The best thing is to take it off the heat cooked slightly less than what you would like, let it sit for 5 minuets and it should be about perfect. The mistake most people make is to cook the meat to exactly the way they want it, by time you serve it it will be slightly over cooked.