Practically all handgun bullets are statically stable, many pistol and revolver bullets even have excessive static stability.
However, dynamic stability is not automatically guaranteed. Some bullets are dynamically unstable at the moment they leave the muzzle, others may loose dynamic stability during flight after being decelerated.
At the moment no reliable method exists, except experimentation, to foresee dynamic bullet instability, especially at long ranges. Some highly sophisticated computerized procedures (numerical solutions to the Navier-Stokes equations) to attack these problems are just being developed by ballistic researchers.
The experimental determination and evaluations of the yawing motion of various spin-stabilized handgun bullets were carried out at the German army proving ground WTD91 in Meppen. I have to thank this organization for leaving me the reports containing those unique and extremely valuable results.
The long-range Doppler tracking radar measurements of the 7.62 x 51 NATO bullet were made available to me by WEIBEL equipment, Gentofte, Denmark.
I also want to thank all readers of this article for their suggestions and support.
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