Three things lead to accuracy problems with a SA revolver. The first is that due to the safety and half cock notches, the trigger pull has to be longer and often heavier than that of a DA revolver like the K-22.
The second is that the long hammer fall allows a lot of time for gun movement between hammer release and ignition.
The third is that hammers are usually heavy, allowing the gun to be jarred off aim when the hammer falls.
None of those are really inherent in a single action as such (S&W made the superbly accurate K-38 in a SA version), but most SA users want a traditional type SA, not an accurate target revolver that happens to be SA. So they get a "cowboy" type revolver, with all its inherent problems.
Jim
|