To complete your idea in relation to the definition of a prohibited firearm, it is the fact of saying that the rifle “est conçu”, is designed, in a certain way that causes problems. It forces you to go and check the original blueprints of the firearm to find out which firearm is prohibited or not, which is impossible for ordinary citizens. This creates a lot of confusion. This is something that was pointed out to Minister Mendicino.
To come back to your question, the use of the term “fusil de chasse” was confusing from the start.