Join Date: Sep 2008
Location: Bavaria, Germany - the center of 15th and 16th century gunmaking
It's really hard to tell how many Gothic haquebuts, that is from the period before ca. 1510, actually survived; Graz mostly holds haquebuts from the 1520's to the 1580's but only very few Late-Gothic barrels that were restocked in the late 17th c. and are now parts of much younger wall guns.
I would say that no more than about 500 Gothic haquebut barrels have survived altogether, only very few of them retaining their original stocks.
Haquebuts (ganze Haken) and wall guns (Doppel- und doppelte Doppelhaken) were normally not used on battlegrounds, at least not on the side of the aggressor. Basically, they belonged to the lighter defense artillery of fortified places such as fortresses and towns where they were mostly kept loaded and primed in arsenals and on watchtowers. Thus, iron and bronze haquebut barrels alike are often excavated near old town walls, where they were fired from the loopholes - and sometimes happened to fall all the way down.
I am not competent enough to actually compare a haquebut to a longbow, I'm afraid.