I use the same mold but my alloy is 13-14 BHN. I have loaded these to 1210 fps using 3n37 in a g35 with zero issues. I think in the case of this bullet and cartridge the powder coating gives us a lot broader range. The glock has a 1-9.84 twist so I would think you could get close to this with your alloy in the AET with a bit slower powder.
How much hotter are you wanting to run if you are already making PF? Maybe going for bowling pins?
Good luck