๐”– Bobbio Scriptorium
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Where did Greenhill's twist rule come from?

โœ Scribed by Donald G. Miller

Book ID
103833402
Publisher
Elsevier Science
Year
2006
Tongue
English
Weight
209 KB
Volume
32
Category
Article
ISSN
0734-743X

No coin nor oath required. For personal study only.

โœฆ Synopsis

Greenhill's Rule for estimating rifling twist in artillery and small arms is interesting both because of its simplicity and longevity. This article describes (a) Greenhill's Simplified Rule for estimating the twist of rifling; (b) describes his original, more complete, but much less known Rule; (c) summarizes how he got the Rule; and (d) relates it to the modern stability factor. Some comments about twist, bullet stability, and black powder velocities are presented.

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