Dillon Arms

Yawing motion of a 
M193 bullet cal. 5.56 x 45

Yawing motion of M193 bullet

Imagine that the bulletīs CG moves on a straight line in the middle of the box,. Then the spiral-like curve indicates the spatial movement of the bullet' s tip along the range in calibres (0...8000 calibers). In this example, the M193 bullet shows a small precession instability.
 
Bullet   Muzzle Values   Yaw Angle  
mass 3.58 g velocity 964.1 m/s maximum < 2°
diameter 5.68 mm static stability factor 1.38 dynamically stable no
 

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