Mid-to-late October cold fronts can produce intense bursts of buck movement: bucks chasing each other, working scrapes hard, even short bursts of pursuing does that aren't yet in estrus. Hunters watching this happen often call it a false rut because it looks like the real thing. It isn't.
What's actually happening: bucks have been on a rising-testosterone curve for several weeks, bachelor groups are breaking up, and the first does in the herd are within a couple of weeks of estrus. A sharp drop in temperature pushes that pent-up activity into the daylight hours all at once. The behavior is real, the visibility is real, but the breeding event is still 10–20 days out.
The signal cuts both ways. False-rut days produce great hunting because mature bucks are on their feet during shooting hours. They also fool hunters into thinking they've missed peak rut when they haven't. Don't burn your peak-week vacation a week early because you saw chasing on October 22nd.
Use the breeding-date data on our state rut date pages as the fixed reference, then read your in-season movement against that calendar. October chasing is pre-rut testosterone showing through a cold front — peak breeding is still on schedule.