Mallard Stalker it occurred to me that you asked about a rifle and not just a cartridge. I don't know if you have access to CZ rifles up there, but they are made in .223 and have a 1:9 twist, so you can also shoot some of the heavier bullets. They also have a 22-250 if you need the extra range. I would probably go with 55 grain bullets if you can get them. Down here, the 243 Winchester is very commonplace as repeating rifle, but is big for small game. The 6 mm Remington is in this power class and some reloaders prefer it. If you plan on eating the rabbit, try a head shot. A body shot with varmint rifles just blow things up. Also, Harrington and Richardson makes single shot rifles in these calibers that don't cost much, and used rifles in other makes are available. Depending on your finances, consider Simmons scopes or Burris. There are others out there, can be pricy. I have a Burris on my 45 70 and a Leupold VX II on my Sako 223. Love my Sako but they are costly. Ruger makes a 22 hornet rifle and Savage has a single shot 22 hornet.