I doubt it.

Your last paragraph describes a different kind of cannon.

Thanks for the effort, but all you’ve done is describe the problems with orbital launch that affec any transportation method. I’m more interested in knowing if there’s a currently viable solution.

But, again, thanks anyway.

Could we shoot a metallic water container into orbit with a big enough cannon?

There’s no Conservation of Volume law in physics, mate: the volume doesn’t come from anywhere.