To me this sounds like the place for a quick handling lever action 30-30 , 32 Win or 35 rem, 444 marlin , or 45-70. Not a brush buster we all know that doesn' t exist. On the other hand a .270 with say a 1.5-7 x scope so that you can see ( and find ) the deer in the scope would work as well; If you are sitting on or stand hunting .Stalking I' d take one of the lever actions just my opinion though.