Colt .45 Traditional Cache
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Difficulty:
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Terrain:
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Size: 
(micro)
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Cache #1 in a gun series
COLT .45 
The .45 Long Colt is the oldest service cartridge still in use
today. It was introduced in 1873 for the then new Colt Single
Action Army (SAA) revolver, the famous Peacemaker. The .45 Colt and
the SAA revolver quickly became legends in their own time, and the
most popular handgun/cartridge combination on the Western
frontier.
The most common factory loads for the .45 Colt give a 225 grain
lead HP bullet a muzzle velocity of 960 fps and an energy of 460
ft. lbs. Or a 250-255 grain lead bullet a MV of 860 fps and a ME of
410 ft. lbs. The mid-range trajectory of this load shows a rise of
3.2" over 75 yards.
Physically, the .45 Colt is a typical, straight wall, rimmed
revolver cartridge. Its rim diameter is .512", its base diameter is
.480", and its neck diameter is .476". The case length is 1.29" and
the overall cartridge length is 1.6". The .45 Colt uses .454"
diameter bullets and standard large pistol primers. The SAAMI
maximum average pressure is pegged at 14,000 psi.
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