One more thought, since you have the Ursack already, if you had too much food to fit in the cannister, the Ursack could be used for temporary overflow until you run out of that excess food. You could pack the food least likely to be damaged in an Ursack by crushing (bears) or any claws that puncture the bag (smaller critters) and put the more fragile food in the cannister. For example, it would be hard to do significant damage to dry pasta noodles in a ziplock bag in an Ursack.

I assume you are aware of the piece of sheet metal that you can use to turn your Ursack into something more like a cannister.
https://ursack.com/products/ursack-a...31950347599947

I do not have the sheet metal, so I do not know how well it would work, perhaps others that have it will comment?

It looks like the most expensive piece of sheet aluminum that I have seen in a long time, if it was me I might look for a different source.

I bought an Ursack, but have not used it yet. But for now my plans are to use an Ursack without aluminum sheet, but with a perfectly fitting drybag inside. Then when there are no good hanging trees at a campsite, I should be able to sleep better.