You should have no issues with the pressure as the Nato round is typically loaded a little hotter then standard 9mm and somewhat close to +P but not quite +P.
The Hellcat is a +P rated pistol. Not all firearms like all ammo so feed issues are uncertain until test.
I've used some Nato 9mm in a different pistol and I could feel the slide delaying to close when racking because of the flat tip bullet was slowing up on the feed ramp, but it would cycle fine when shooting.