I think Gerhard Wirnsberger's text is still quite applicable but it has to be taken for it's position in time. His effort is a „Snap-Shot“ in time of a proof process which also was a series „Snap-Shots“ in time defining the process of Protecting the Public with regards to Sporting Weapons, over time. But almost every phrase, if not every word, has to be dissected similar to your efforts of this purported >>Schüler<< Bolt Gun. It just takes time to digest it and dissect it. Folks now want a push button world via AI and very specific answers out to the nano-metre realm.

Hochachtungsvoll,

Raimey
rse