Even a giant secure container has less than 4000 m^3 of capacity, and you can only access them when within 2500m of them.
So it might be pretty inefficient.
You can use a normal jet can by ejecting from your ore bay and then opening the can and adding to it. Normal jet cans have a much larger capacity (around 25000 m^3), but can be looted by others, so they have some risk too.