The glories of Google!! I found the question very interesting, and discovered the Nuzi texts, which are kind of contemporary (kind of) and important since they shed light on the OT has a section of how many arrows were standard military issue for their army. So for example chariots were issued with five quivers, and each quiver had 30 arrows.
Nuzi Texts and Their Uses as ... - Maynard Paul Maidman - Google Books
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