It is actually quite a simle process. It sounds intimidating but it's not.
goto http://www.losttarget.com/importfirearmcanada.htm for info.
basically you buy the gun and have it shipped to an FFL that will get the US export paperwork done and also take care of registering it in Canada getting you a CFC cert (along with the import authorization). Then meet them at the border and do the transfer and it's in Canada ready to be used.
I would contact Frank Smith in Plattsburgh NY if you're ready to pull the trigger, so to say:
Smithelectrics/Francis W. Smith
FFL Licensed Import/Export Services
Chazy NY 12921