If you have a steel “ heavy” trigger shoe in the 38, be aware that recoil combined with inertia can make a gun with a light trigger pull have hammer follow. The heavy trigger shoe needs a standard weight sear spring to prevent hammer follow.
In general: the lighter the power of the bullet to be fired, the lighter the main, recoil, firing pin, and mag spring need to be.
The sear spring tension has to be strong enough to keep the sear from bouncing of the hammer hooks.
Strictly my opinion :
I never warmed up to the four finger spring, seems more like an attempt to sell parts than to improve the gun design. By splitting one of the springs, a certain amount of spring material is lost, thereby requiring more total tension on the two springs than was required on a single spring. The disconnector rides, pretty much, for free.
In general: the lighter the power of the bullet to be fired, the lighter the main, recoil, firing pin, and mag spring need to be.
The sear spring tension has to be strong enough to keep the sear from bouncing of the hammer hooks.
Strictly my opinion :
I never warmed up to the four finger spring, seems more like an attempt to sell parts than to improve the gun design. By splitting one of the springs, a certain amount of spring material is lost, thereby requiring more total tension on the two springs than was required on a single spring. The disconnector rides, pretty much, for free.
