The Firing Line Forums - View Single Post - trigger work on a S&W 66: what to expect?

dahermit · October 13, 2012, 10:59 PM

The mainspring is what controls the ignition of the primers. The rebound spring can be lightened considerably and cannot cause light strikes...it just controls trigger reset and adds significantly to the force required to fire the gun if too heavy (and they all come too heavy).
The works of S&W's these days are rougher than a cobb. I have had them come with triggers dragging on the side of the frame, hammers that strike the frame when dropping, the hammer bosses rough (machine marks digging into the adjacent area of the hammer). It is well worth the while to get some trigger and hammer pivot shims to straighten those so they do not contact the frame as part of a smooth-up job.
In most cases, the contact surfaces and angles between the trigger and the hammer are fine the way they come and do not need to be touched.

October 13, 2012, 10:59 PM	#5
dahermit Senior Member Join Date: October 28, 2006 Location: South Central Michigan...near Posts: 6,501	The mainspring is what controls the ignition of the primers. The rebound spring can be lightened considerably and cannot cause light strikes...it just controls trigger reset and adds significantly to the force required to fire the gun if too heavy (and they all come too heavy). The works of S&W's these days are rougher than a cobb. I have had them come with triggers dragging on the side of the frame, hammers that strike the frame when dropping, the hammer bosses rough (machine marks digging into the adjacent area of the hammer). It is well worth the while to get some trigger and hammer pivot shims to straighten those so they do not contact the frame as part of a smooth-up job. In most cases, the contact surfaces and angles between the trigger and the hammer are fine the way they come and do not need to be touched.