Artillery Test on Harzhorn Battlefield (235 AD)

[P. Clodius Secundus]

Thanks for the clarification. It would appear then that Herr Altmann is saying that the eariler (presumably wooden-framers) could effectively shoot 300m and later ones (iron-framers) up to 400m. If that is a correct assessment of his statements,I would suggest that he is seriously underestimating the power of these machines, especially the iron-framed ballista.