Here's another story that has some info the regs.
As in, you could bring in a long gun with proper paper work, but only with a reason ( like hunting grizzlies ).
Your revolver won't get across the border.
Guns seized at Aldergrove border
Eleven illegal weapons were seized at B.C. border crossings last week, including five in Aldergrove.
By Neal Hall, Postmedia Network July 20, 2011
Canadian border officers in B.C. seized 75 firearms so far this year, included 10 loaded handguns.
The seized weapons were mainly from U.S. travelers who failed to declare them, according to the Canada Border Services Agency.
It is illegal to bring undeclared firearms into Canada.
A total of 461 firearms were seized last year at border crossings across Canada, with 141 of those seized at B.C. crossings.
The CBSA provided a list today of the most recent seizures last week:
July 11: An officer at the Aldergrove border crossing seized five loaded handguns and a loaded shotgun from two U.S. men who were heading to Alaska.
The travellers, Hugh Wayne Barr and Danny Ray Cross, did not declare any firearms during the primary examination, but the weapons were discovered in the vehicle during a secondary examination.
Both men were arrested and charged by CBSA’s Criminal Investigations Division with various offences, including smuggling under the Customs Act and firearms offences under the Criminal Code.
The judge ordered both men to be released on $50,000 bail.
July 12: CBSA officers at the Osoyoos crossing discovered and seized a loaded 9-mm handgun from Max C. Montgomery, a U.S. resident. Officers also discovered two magazines capable of containing more than 10 cartridges.
Montgomery has been charged by CBSA’s Criminal Investigations Division with various offences, including smuggling under the Customs Act and firearms offences under the Criminal Code. He was released on $10,000 bail.
July 13: Two travellers arrived at the Pacific Highway crossing in Surrey in a motorhome, intending to tour B.C. for two months. The vehicle and occupants were referred for an examination where an undeclared loaded .22-calibre revolver and ammunition were discovered. The firearm was seized and both travellers were arrested for smuggling and later returned to the US.
July 14: Officers at the Abbotsford-Huntington crossing seized an undeclared, loaded .380-calibre handgun from a U.S. resident, Jack Vinson, who had not declared any firearms. The firearm was found in the vehicle and Vinson was immediately arrested and charged with three offences under the Customs Act and Criminal Code. He is currently in CB custody.
July 17: Officers at the Douglas crossing in Surrey seized two smuggled handguns and arrested Nathan John Keese of the U.S., who allegedly attempted to bring a loaded 9-mm semi-automatic pistol and a .50 Cal semi-automatic pistol into Canada. He was charged with weapons offences under the Customs Act and Criminal Code.
The CBSA warns U.S. travellers to be aware that visitors to Canada must declare all firearms in writing.
This can be done by filling out Non-Resident Firearm Declaration form and paying a $25 fee. Once confirmed by a border services officer, it has the same effect as a temporary license and registration and is valid for up to 60 days. All necessary forms can be found at www.cbsa-asfc.gc.ca
Anyone who does not declare their firearms upon arrival can face prosecution, and the firearms and the vehicle used to carry them may be seized.
Visitors may temporarily import non-restricted firearms, such as common hunting rifles and shotguns, if they complete the non-resident firearm declaration and if they a valid purpose (hunting, target shooting, for protection from wild animals in remote areas where firearms are allowed).
For information on importing a firearm, visit: http://www.cfc-cafc.gc.ca/factsheets/visitin_e.asp.
U.S. visitors to Canada should also ensure they comply with Canadian regulations concerning the safe transportation of firearms.
As well, many weapons are considered prohibited and therefore not allowed in Canada.
Travellers who have fully declared prohibited weapons or firearms, but don’t have the required licence or permit to import them into Canada, will not have their goods seized, and have the option to have CBSA hold the weapons until the required permits and licences are obtained, abandoning the goods to the Crown or appealing the prohibited classification.