The idea was that law enforcement and civilian buyers wanting a less expensive adjustable sight revolver would buy the Trooper, buyers wanting the. While the Trooper was to be a lower cost model, the new 357 was to be Colt's premium model holster revolver with a more carefully fitted and tuned action and a better external finish. The new 357 and Trooper were virtually indistinguishable without a close inspection. The 357 outwardly had a close resemblance to the new Trooper models, since they used the same frame size and action. The new gun was ready in 1953 and Colt gave it a unique name: The Colt 357. This new frame design was named the "I" frame. 357, Colt gave the frame and cylinder of the new gun special heat treating to increase it's strength. To withstand the much higher pressures of the. Colt had used this basic medium frame since the Army Special of 1908.įor use with the Magnum round, Colt changed the medium "E" frame with it's hammer mounted firing pin to a new design with a spring loaded firing pin mounted inside the frame. The new medium frame revolver was built on a modified and strengthened Colt medium frame. 357 revolvers had been built on large frames, Colt using the New Service frame, and S&W using their large "N" frame. 357 Magnum revolver built on a medium frame. 357 Magnum holster gun, Colt developed a totally new concept: a. These Trooper models were really nothing more than the Colt Officer's Model Match fitted with a heavy barrel with a ramp type front sight on a large ramped base. 22LR version for use as a training revolver to complement the. 38 Special adjustable sighted revolvers aimed at the law enforcement market.įollowing a common practice, they also offered a. Realizing they'd made an error, Colt decided to develop a new revolver specifically for the Magnum round and they shook up the gun world with what they developed.Īccepting that many buyers would now demand adjustable sights on revolvers, Colt developed a new series of medium framed, adjustable sighted holster revolvers to meet the need.įor those buyers who wanted an inexpensive service type revolver, Colt developed the Trooper series. With the large frame New Service model discontinued during the war, Colt didn't have any double action revolver in it's line that could be chambered for the powerful Magnum round. 357 Magnum would be a cartridge bought only by a few customers, so they'd largely ignored it. 38 Special revolvers they'd bought before the war.Ĭolt had assumed that the. In the early 1950's Colt began to upgrade it's product line by adding new models and upgrading old ones.Īfter the war ended, Colt had made a marketing error in assuming that the post-War customers would continue to buy the same fixed sight.
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