You won't believe this, but if you plan on making this trip a regular occurrence, here's what you have to do.
1. Sign up for two courses given in Canada: the first one is for non-restricted long guns. The second is for restricted guns including handguns. Take a written and practical exam for each.
2. If you pass the tests, you wait for the government to figure out that you passed them. Then, fill out an application for your Possession and Acquisition Licence. Get references. Get your spouse or significant other to give you their permission in writing. The government will probably telephone them to be sure that they didn't sign under duress. The application asks you all sorts of personal info. Bankrupt recently? Depressed? Submit a photo.
3. If you pass that, you must wait a long time to get your licence. Now you can buy a gun, but you can't use it. And you have to get government authorization to transport it from the gun store to your residence--all locked up.
4. Join a gun range. Take another course. Do a series of probationary shoots. If you pass this, the range applies for your authorization to transport your handgun to the range. Unloaded. Locked and case locked.
5. Now, call the government and get another Authorization to transport, this time from border crossing to border crossing.
(In my case, it's residence to border crossing "ATT".)
Otherwise, forget about a handgun in Canada.
As an American residing in Canada, that's what I had to do.
I posted this only to remind us to fight any further government intrusion into our 2A rights. Canada is only slightly worse than NJ, MD, and a few other places.
And since Canadian guns (only of the law-abiding) are registered, confiscation will be easy.