Smallbore Snubbie: Ruger LCR-22
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The other significant difference in the LCR-22 is that while the trigger mechanism uses the same patented Friction Reducing Cam as the original LCRs, it ramps up and maxes out about 2 to 3 lbs. higher than the .38 Special version and lets off at about 1 to 2 lbs. more.
Small revolvers traditionally have stiffer DA trigger pulls than medium- or large-frame revolvers simply because the leverage advantage of their small operating parts is inherently less than the longer/larger dimensions of the same parts in bigger guns. The original LCR solution was a new interface between the trigger and hammer involving a small camming surface dished out on the trigger, which has the effect of positioning the motion vectors of the two parts so that they operate in tandem when set in motion instead of resisting each other and creating friction.