As a collection in Canada it might be hard, you could try an auction, like Bud Hayes (which I have never been too, but who I know handle ammo), they could likely break it down into lots for sale.
Otherwise I can only think of a few collectors in Canada who might want to take it it on. The problem is a collection is an individuals desires, not necessarily something many others would want, or at least want to pay for while they part it out.
Personally depending on what was in it I would be interested, but in truth would be looking for the items I wanted, and parting the rest out.
Caryridge show in Edmonton in November, that might be a good place to try and sell it in big chunks, or as a single collection.