In Manitoba and Quebec, some provincial hunter-safety courses are equivalent to the CFSC. If you passed those courses before 1995, you do not need to do the CFSC.
You may be exempted from taking firearms safety training if you have owned a firearm continuously since January 1, 1979, and a Chief Firearms Officer (CFO) believes that your knowledge of firearms laws and safe handling practices meets the national safety standards.
If you passed the CFSC before February 1999 you have also passed the CRFSC by default. You can apply for a Possession and Acquisition Licence without taking the course again