"Büchsen" is the word for a sporting or hunting long gun
I agree, I have a late 19th century German-made double rifle that has the maker's name & 'Hofbuschenmacher' on the top rib. Translates to 'Court Arms Maker', similar to some of the English makers using 'By Appointment to HRH......'.
"For a man, be he ever so much resolved to do his duty as a parent, can't be flogging his children all day....."
The Memoirs of Barry Lyndon, Esq. (William Thackeray).