me and my buddies shot them all in the early 90's. 1000 per week was normal, shotguns, pistols, Ak's, SKS's, long range varmint rifles, hawken muzzle loaders, 17 m4, 17 Rem, 222,223,22/250,243,25/06, and 7 Mags. Norm for the day was shoot the wabbits, then shoot the crows and coyotes coming in to eat the rabbits. The places looked like the battle of Gettysburg, we saved one farmer from bankruptcy, killed over 3000 in 10 days, night and day shooting...exhausting work. The old farmer said, "you boys take your rabbit shooting serious, eh"? We killed over 60 in 20 minutes in his large front yard while sitt'en on the front porch with a Ruger 22 mag loaded with win 40g HP.
Rabbit populations go in cycles, drought has probably not helped the cycles any.
If you have not ate jackrabbit, they are good. Put them in a pressure cooker for 7 minutes under full steam, cut up 1/4 large onion and a clove of garlic, make you slap your grand ma it is so good! Be sure and inspect their liver and look for wolves(worms) in the hide.
If you are going to eat the jackrabbit, it is best to shoot right in front of their nose and suck the wind out of them, so as to not mess up the meat.