Straight from the transport and storage regs:
unloaded”, in respect of a firearm, means that any propellant, projectile or cartridge that can be discharged from the firearm is not contained in the breech or firing chamber of the firearm nor in the cartridge magazine attached to or inserted into the firearm. (non chargée)
https://laws-lois.justice.gc.ca/eng/.../FullText.html
A ammo sleeve or holder is not a magazine, nor is it installed anywhere near the feedway, or breech of the firearm.