My 470 load was built upon an initial tip from Mr. Reimer, Johannsen <info@johannsen-jagd.de>;
I've just found the note he sent me with the recommended load - 109 grains - and in that same note he wrote that Tubal7000 is equivalent to Rottweiler905, AlliantRL19, IMR4350 and VihtavuoriN550. As I have already written I have only use Tubal sofar.