Quote:
Originally Posted by Steve_NEPhila
There will be no appreciable difference in accuracy or precision barring any defect with either barrel length. However, a longer sight radius does help when seeking precision from a particular weapon. Sight radius is not dependent upon the barrel length. Without going into serious details I can say with confidence that having a 3 inch barrel will in no way decrease the effectiveness of your weapon for the intended purpose.
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Sight radius is dependent on the barrel length, if the sights are on the barrel?
In any case, there will probably not be a noticeable difference in accuracy between a 3 and 4" 686. If you are not planning on carrying it I would opt for the 4", however.