I've done a few loads using Alliant BE-86 with the gen1 RMR MPR and have more planned.
As others alluded, the external dimensions of the new MPR Nuke is similar to the MPR gen 1, so, I'd expect similar results with the Nukes.
I typically load on the lighter end of the spectrum (with Alliant Sport Pistol). But I've nurtured a love affair with BE-86 across 9x19mm, 40 S&W, and 357 Sig when the goal mid-range to factory-ish levels.
With the 124gr MPR, my objective was ~1150. This was just in casual parity to some factory SD loads spec'd in that range -- for example: Fed 124 gr HST, 1150 MV, 4" barrel.
I believe the new Nukes expand at notably lower velocities thanks to the lead core pre-scoring.
I didn't quite reach 1150 with BE-86 before approaching what appeared to be diminished gains.
But my COAL was a bit longer than most at 1.090" and I'm using a rather light crimp. I may try adjusting both. And also, Ramshot Silhouette is on deck.
To your question, it does seem like Hornady XTP data interpolates fairly closely:
Hornady's 10th Ed: 9x19mm / 124gr XTP /
1.060" / BE-86 /
5.2gr /
1100 fps /
4" barrel (I believe Hornady has a standardized protocol at 74F)
My Loads >>>>> 9x19mm / 124gr MPR /
1.090" / BE-86 /
5.3gr /
1092 fps /
4.9" barrel / 57F