Rifled Weapons: A Forensic Analysis

Forensic Analysis of Rifled WeaponsThis blog article is a synopsis of our latest Forensic Science Newsletter ‘Rifled Weapons.’ If you wish to receive the full article and additional forensic pathology newsletters, please sign up using the form at the bottom of this page.


Rifled weapons include handguns, pistols and revolvers, and rifles.  These are weapons in which spiral grooves have been cut into the length of the interior or bore of the barrel (Fig. 1).  Rifling consist of ‘lands’ and ‘grooves’ (Fig. 2).  The ‘lands’ grip the bullet as it passes down the barrel, giving the bullet a rotation, which has a gyroscopic effect that increases the stability of the bullet’s trajectory and thus its accuracy (Fig. 3).  In contradistinction to rifled weapons, shotguns are smooth bored.  This is because rifling in a shotgun barrel would cause the shot to disperse to quickly in a 360 degree arc.

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