Lebarons carries the Nosler bullets, but best of luck having them in stock or finding somebody that can find them. If i have questions, I will go to Stittsville since they know a WHOLE lot more than the Lebarons does; if Mark at Stittsville does not know, one of the customers that mill around will

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Stittsville Shooting Range has most of what anyone would want, but maybe not in the store. They have a small store with a large inventory, so most of it is in a warehouse. It is worth going out, but if you really want the bullets, call them a day before you may visit and they will have them sitting there for you when you get there.
Are you flying in, or driving? If you are driving and need relaoding supplies, you have Higginsons in Hawkesbury that you could stop at. Only problem going there for you is that they do not carry Nosler products.
In the general area, you also have Boutique L'archerot over in Gatineau; may not have the bullets, but it a pretty cool hutning store.
No bullets there, but Gunco on Collonade is fun to go to. Jason Spencer is the local gunsmith and he has a bunch of guns up on the wall. You can also go visit his buddy MAx (I think it is Max); he brings his hunting dog with him everywhere he goes and the pooch is the first one to great you usually when you come through the door.