Very common thing to do. For years the Dallas PD armorer did trigger jobs. His signature touch was to install a small set screw in the frame with a tiny Allen screw to hold the mainspring strain screw in its slightly backed out position.
You must relieve some of the mainspring tension if you also reduce the trigger return spring tension or, you wind up with a very sluggish trigger return.
It's a balancing act. It should always be balanced heavily on the side of reliability though. But, generally, most guns are oversprung from the factory. When S&W sent a Model 10 out to ride a thirty year career in a cops holster, they compensated for a gun that would see little or no maintenance. Bone dry. Congealed grease. Dust bunnies. Freezing temperatures. Whatever. That gun was expected to go bang.
We are gun geeks as a whole. We take good care of our toys. As a matter of fact, we likely cause more wear through cleaning, polishing etc than a duty gun gets.
You must relieve some of the mainspring tension if you also reduce the trigger return spring tension or, you wind up with a very sluggish trigger return.
It's a balancing act. It should always be balanced heavily on the side of reliability though. But, generally, most guns are oversprung from the factory. When S&W sent a Model 10 out to ride a thirty year career in a cops holster, they compensated for a gun that would see little or no maintenance. Bone dry. Congealed grease. Dust bunnies. Freezing temperatures. Whatever. That gun was expected to go bang.
We are gun geeks as a whole. We take good care of our toys. As a matter of fact, we likely cause more wear through cleaning, polishing etc than a duty gun gets.