http://ballisticsbytheinch.com/9luger.html
Based on this website, a velocity increase between 150 and 200 fps seems typical when going from a pistol to a carbine. Not a huge difference, but I think possible over-expansion is a valid concern. Something that's designed to expand at 1200 fps possibly could fragment at 1400 (in some of my own tests shooting into water, I've had hollow points act like frangible bullets). My hunch is that heavier, slower bullets might perform more reliably at different velocities, but as others have said, testing things for yourself might be a good idea.