It seems that most years, about this time, someone will post information such as the OP, Tom/Barb, about how to transfer guns through Canada. Each year, someone like myself, will ask them to report back to this group how the border crossing with a firearm went for them, after they have made their trip.
So far no one has made a fall time post after taking a handgun through Canada, that I am aware of reading. Yes I have taken handguns into/through Canada, but not in the last 20 years. But all that information is all on my computer screen and that is the only subject agents want to talk to me about at border crossings. Never get any food questions, so I guess that is good LOL. Form or no form, I wouldn't attempt to take any handgun into Canada these days. Individual agents, on both sides of the border, have great discretion on who they allow to cross the border. Probably the main question you will be asked and you need a good answer, is "why do you need a handgun in Canada?" Generally, for self protection isn't a satisfactory answer.
I don't take handguns or long guns into Canada as I don't feel the need. Yes, traveling in the Lower 48 states, i normally have access to a firearm, part of my working as a law enforcement officer for a number of years.
There are exceptions, but most apply to very few people. Such as federal employees, that have been issued a government owned handgun and are passing through Canada on official orders, such as military pilots changing duty stations to/from Alaska. Having a good lock box for guns and one for ammunition seems very important.
Anyway it would be nice if someone would report back to this forum, after their experience of taking a handgun into Canada.