Call it the main event of the hunting calendar. The fall firearms season for deer hunters officially opens on Saturday. It will last through November 26th. That will be followed by the late youth season November 29th through December 1st. Between December 6th and 8th, hunters can harvest antlerless deer with their firearms. The alternative methods season lasts from December 28th through January 7th. Deer hunters in Missouri harvested over 290,000 deer during the combined seasons in 2018 and early 2019.