10MM Auto Traditional Cache
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Difficulty:
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Terrain:
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Size: 
(micro)
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The 10mm Auto (10x25mm, Official C.I.P. Nomenclature: 10 mm Auto)
is a semi-automatic pistol cartridge developed by Jeff Cooper and
introduced in 1983 for the Bren Ten pistol. It was initially
produced by ammunitions manufacturer FFV Norma AB of Åmotfors,
Sweden.
Although it was selected by the F.B.I. for use in the field, their
Firearms Training Unit "concluded that its recoil was excessive in
terms of training for average agent/police officer competency of
use and qualification," and the pistols that chambered it were too
large for some small-handed individuals. These issues led to the
creation and eventual adoption of a shortened version of the 10mm
that would evolve into what is today the .40 S&W.
Although respected for its performance and versatility, the 10mm
never attained the mainstream success of its downgraded variant,
the .40 Smith & Wesson. It is considered a niche cartridge,
with a small but enthusiastic group of supporters who often refer
to the .40 S&W as the ".40 Short & Weak".
The 10mm Auto cartridge was championed by famous firearms expert
Jeff Cooper. It was designed to be a medium-velocity pistol
cartridge with better external ballistics (i.e., flatter
trajectory, greater range) than the .45 ACP and greater stopping
power than the 9x19mm Parabellum. When Norma designed the cartridge
at the behest of Dornaus & Dixon for their Bren Ten pistol (a
strengthened, licensed-production of the CZ 75), they decided to
increase the power over Cooper's original concept. The resulting
cartridge which was introduced in 1983, is very powerful, packing
the flat trajectory and high energy of a magnum revolver cartridge
into a relatively short, rimless cartridge for an semi-automatic
pistol.
Additional Hints
(Decrypt)
Rlr yriry
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