lighter trigger pull

[rembolt]

does anyone have any tips or suggestions how I might make the trigger pull lighter on a model 39 cooey.it pulls at well over 8# right know.would like to lighten to 4 -5# if possible.thanks

 

[sunray]

Change the springs. The trick will be finding the right sized spring.
As I recall, the trigger parts are stamped on Cooey's. Not easy to polish the sear and striker mating parts. You could give that a try though. No metal removal. Just polish out the tool marks. Be a good idea to look for burrs before you do anything.

 

[rembolt]

thanks I got a couple different springs today..I am going to see what I can do.I was thinking valve lapping compound on bolt notch and sear .for a smother mating surface.

 

[Levi Garrett]

anything over 3 lbs is fine, but we must caution any work be done by a gunsmith, as its critical for safety reasons...

 

[sunray]

"...thinking valve lapping compound..." Jeweller's rouge and a cloth wheel. You'll have to experiment, carefully, with the springs. Measure the existing spring length and diameter and match that with a lighter weight spring.

 

[Marcel B.]

I would stay away from power tools for sear tuning, it's too easy to mess things up.
Go for polishing stones just to smooth up any burrs without changing angles.

 

[rembolt]

thanks guys I polished the bolt notch and sear .not much change in weight but smother.I knock the trigger pin out replaced the spring with the lighter of the two I had.its now around 6# which is a vast improvement.unless I can find some more springs to try Iam done.ps I wacked the butt several times with a head blow malat and the bolt does not fall .looks good to go.

 

[driver351]

have you tried the spring from a click pen

 

[sunray]

"...spring from a click pen..." Far too light.