I don't know a great deal about double rifles having never owned one (not for lack of wanting!)
In a recent discussion I was told break open actions such as these are a relatively weak design in comparison to a bolt action.

I was a little surprised by this, as I am sure there are some fairly high pressure cartridges available in a double, and that the action design was in fact a reasonably strong one, though, admittedly perhaps not quite up to a bolt action but not that far behind surely.

What say ye?