Model 640-1

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My 640-1 has a smooth trigger
 

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My recollection is my 640-1 as a smooth trigger, but I would have to go downstairs and dig it out of the safe but I am old, tired and lazy and don't want to. If that gun had a serrated trigger, and shooting .357 Magnum, it would quickly shred your trigger finger!


I have shot mine with full-snort .357 loads, 15.3 2400/158 SWCGC, and it HURTS!!! This is equivalent to the original factory loads and they generate ca. 1500 FPS from an 8 3/8" Model 27! Interestingly it is one of the most accurate revolvers I own, just not with that load:mad:. A friend and I used to go out to an old quarry and set clay targets in cracks and ledges on the quarry wall. I could break them about 50% of the time, and this is at 100 yds. obviously double-action! This was about 28 years ago, just after this model was released. My eyes were a lot younger and better then.:D
 
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Mine, an ex-Michigan State Police gun that came from the buying frenzy here a few years ago when Centerfire Systems had a batch of them has a smooth trigger...and the smoothest double action of any revolver I own.
 
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Since your 640-1 wasn't introduced until 1996 it would definitely have the standard .312" smooth combat trigger. And yours is most likely the MIM trigger with the hollow back.

1986 - New forged smooth combat trigger became standard: .312" J, .312" - .320" K, L & N, including the later MIM triggers, and in 2003 the X frame came with the MIM .340" trigger.

Before that small frame triggers were grooved since the early 1950's.
 
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