Can Minor’s Buy Ammo?

Yes a Minor’s Licence’s Can Purchase Ammunition

Minor’s Buying Ammo

According to the Ammunition Regulations Act you must be at least 18 to buy ammunition, have a valid PAL and show a secondary piece of identification. Anyone between the age of 12 and 18 may purchase ammunition if they provide valid identification and a valid licence.

https://www.rcmp-grc.gc.ca/en/firearms/minors