I seriously doubt the price would be that much different in Canada to manufacture versus the US at this point in time. The exchange is basically even when you consider what a company here is forced to pay for benefits versus what a US company needs to pay for. My company routinely wins contracts to supply the US automakers all the time competing against US, Mexican and even Asian suppliers. We have fair margins and run a tight business.
I go back to my previous points, retailers in Canada are out to make much more profit than in the US. Forget guns, ammo or anything like that. How can I get a top of the line Honda mower for $400 less all in with taxes, exchange and all the other stuff than I can get it for here? Why are circuit breakers 50% less at Home Depot? Both countries build the same houses? The reality is that the margins demanded here are more and the exchange rate gap has never closed because it is more profit and what does a consumer do if they cannot go to the US?
Forget ammo I would be interested in some of the Sponsor comments as to why simple presses, dies and reloading hardware are so much more here when there are no export controls at all?