This paper studies gun-use regulation and firearm mortality. I gather historical schedules of deer hunting season in North Carolina and Virginia and pair them with morgue records at county-day frequency. Hunters increase firearm use during deer season and sharply decrease use at season’s end. The end of deer season in these states reduces firearm homicide fatalities by 45 percent of its daily average, 1 homicide every 3 years. Deer season homicides spill over onto women, who rarely hunt, but do not affect non-firearm fatalities. Public policies that encourage safer gun-use, even among lawful firearm owners, may decrease firearm injuries.