Just walked into the airport carrying the rifle with a mag in on a sling
Should be fine
(kidding in case some of you retards read that seriously)
I've flown Winnipeg-Toronto and back with my guns. never much of an issue.
Although if you can get it in luggage/case which does not directly look like a gun case, I find thing's move smoother. and simply tell the counter clerk whats in the case.