When flying into canada years ago.....we got pulled aside because when asked my father said automatic.....semi automatic....rifle, our guide later told us just to say you have a couple of sporting rifles....or guns etc...

If they asked, Id just say I have 2 guns, or 2 firearms in the case.

But certainly calling and asking specifics might be the best thing to do, otherwise i relaly don't see why there would be an issue with a rifle/rifle or rifle/pistol.