How hot of handloads are safe in the new Ruger LCP 380ACP?

It's Smurf(c) sized, plastic framed, DAO, and (gasp) is locked breech just like 1911 models! Formerly all the blowbacks had to limit pressure to 21,500 psi to avoid giving the br a hernia. But this hyper-reliable little gem surrounds the br case with close-fitting steel for the duration of the high pressure part of the powder burn. Of course the longer and 35,000 psi rated 9mm Luger is about .020" thicker at the head. So that determining one end of things, I wonder how much of an increase in pressure would be safe and reasonable for LCP-use-only handloads? And what if you had brand new Nickeled cases, which would resist sticky extraction at higher pressures? Yes, I know, one would have to guard all handloaded custom ammo intended for only one gun, as usual. When I get epifilials on an LCP, I personally intend to work up something with the best cases I can find, measuring case distortions with incrementally increasing power. A few serious answers please among the merriment. Regards, Larry.