Winchester 70 sear spring

[DickE]

I have a model 70 post '64 that I cant get to under 5#. Tried weaker spring for the trigger return, did not help. Wondering if the powerful sear spring could be the culprit. polished all sear engagement areas
Any incites?

 

[msilbernagel]

I picked up a M70 in '06 a year ago, and found the trigger pull disruptive.. went looking and found this:

M*Carbo Trigger Return Spring

Love to shoot it now. Installed easily, works well.

 

[DickE]

I have removed the trigger reset spring completely, reset trigger sear by hand, pull weight still unacceptable. I normally have no trouble getting a model 70 to 2.5# with stock components. That is the quandary.

 

[swd]

The sear needs a slight angle change to reduce the mechanical weight. Sometimes the safety will also need need a slight re fit after doing this. You need gunsmith that understands M70 triggers very well or go aftermarket.

 

[DickE]

The sear needs a slight angle change to reduce the mechanical weight. Sometimes the safety will also need need a slight re fit after doing this. You need gunsmith that understands M70 triggers very well or go aftermarket.

Which sear? what angle?

 

[swd]

This sear on the trigger blade. Reduce the angle slowly until it’s around 1.5 pounds of mechanical pull. Then add the spring back. You can then bob a 45 at the top edge to reduce engagement. It ain’t a Jewell so don’t go for perfect creep or you’ll have an unsafe amount of engagement. It’s best done in a fixture with fine diamond file and it absolutely has to be cut clean, straight and flat to the bottom. The firing pin will move slightly forward. Depending on how much, you’ll likely have to re fit the safety. It’s not a job for guys that haven’t done a lot of trigger work as it’s very easy to get an unsafe trigger or one that falls off all the time. Plus the understanding of re fitting a safety.

 

[DickE]

Ever so slightly, tried your trick. Now at 3# and will call it good. Didn't take much, no need to mess with safety. Thank you very much, I appreciate it. Similar trick on Ruger 77 triggers. Now will have to wait for blizzard conditions to subside to actually test fire. Of coarse after safety check in shop. You sir have a good day.

 

[Walt Krafft]

You need to preform a safety check. Close the bolt, engage the safety, pull the trigger, release the trigger, now disengage the safety. The firing pin must not fall.

 

[AlNyhus]

What Walt says!

After doing what Walt outlines above.......I close the bolt, engage the safety, press the trigger, release the trigger, smack the butt of the rifle firmly on the floor and then disengage the safety. Model 70's seem to be sensitive to the 'butt smack' test.

Great pic and explanation, swd.

Good shootin' -Al

 

[Greg Y]

I like to give the back of the action a pop with a leather mallet while out of the stock. This lets me visually examine the engagement movement. The relief angle is a slippery slope as it can go far enough to creep the sear with the slap from the back.

I break the edge JUST enough to not be sharp after polishing. I can usually get very acceptable results.