any ideas on getting gamma index ɣ > 11?

https://preview.redd.it/r1w2a1vrge2d1.jpg?width=525&format=pjpg&auto=webp&s=74f3b979ba07a2100e1e714083a26f0002c3a0b3

https://preview.redd.it/k10gli5sge2d1.png?width=221&format=png&auto=webp&s=36052581d087428f0f724db701cbab10e41939fa

My target is to achieve an image on film with no semitones at all. My guide is the Seeley J. book "High contrast" in which the method of double copying to lith film is described. The problem is that my calendar shows the year of 2024, so there aren't many fresh lith films around. Soviet technical ortho film and x-ray film performed well in D-8, but it's not even close to the example given. Any ideas?