I have hunted in early october. Sometime you will get lucky and see one that is still in summer patterns feeding in fields right before dark at that time of year, but the smarten up quickly. Setup between bedding and feeding areas and you will see bucks. I see mostly does at that time though to be honest. The best time to hunt PA is the last 2 weeks of archery in my opinion, when they are rutting.

I have shot 6 bucks in PA. The largest was a 115" class 8 pointer that had a 16" spread and had fairly heavy horns for a buck of that spread. He weighed probably in the 160's dressed and that was in 2002. Other friends and family members have shot bucks in the 120" - 135" class up there as well, that were big deer for the area. My father had one slip by him on the way to the stand that we both watched the neighbor shoot in 2003 that weighed over 200lbs dressed and had a 19" 10 point rack on him. It was a huge deer. We always shoot does every year there that are mature in the 115 - 130lb range.