Our Newer Model 627-5 is not popping the primers...

[WaistGunner]

Any suggestions? The primers on all cylinders are being lightly dented by the firing pin, but not exploded. Is the main spring in need of tightening? We tried several different types of .38 ammo through it yesterday and it just ended up not popping primers by the end of our shoot. Thanks ahead of time for any help. Waistgunner

 

[Alk8944]

Two things. First, revolvers have one cylinder and six or so charge holes (chambers).

If the strain screw is not already bottomed out then it needs to be tightened until it is, and fairly tight. The strain screw is not an adjustment but merely a design feature which allows the gun to be assembled without resorting to a spring cramp to install the mainspring. If it started out firing OK and got progressively worse while firing several, or quite a few, rounds then it is almost a certainty the strain screw is loose.

 

[bountyhunter]

I believe the PC puts the Wolf reduced power mainspring in those guns, so they don't have much extra strike energy to begin with. If the strain screw is tightened all the way down, and still is misfiring, the screw might have "worn short" where the tip tapers where it goes into the mainspring which decreases spring force.

The other thing is to make sure the primers are fully seated on the ammo if they are reloads.

 

[AzShooter]

Most 627s that I've shot have had custome trigger jobs with light actions. They will shoot Federal brand ammo and that's it because Federal primers go off with the lightest striking force, about 32 onces. CCI take 48 -54 oz to fire.

First thing is tighten the strain screw as has been told before, after that send me the 627. I need a new one to tinker with.

 

[WaistGunner]

Two things. First, revolvers have one cylinder and six or so charge holes (chambers).

Hah! I am an idiot...thanks for the correction, it is a revolver not a Ford V8...

Thank you gentlemen for your responses regarding the strain screw. I will make sure it is seated tightly and we will take her out for another trial. Take care, Lance (Waistgunner)

 

[bountyhunter]

Hah! I am an idiot...thanks for the correction, it is a revolver not a Ford V8...

Thank you gentlemen for your responses regarding the strain screw. I will make sure it is seated tightly and we will take her out for another trial. Take care, Lance (Waistgunner)

If the strain screw is tight and it's still misfiring, you can do the old trick of putting a primer cap over the end of the screw for a little extra push.... while the new screw arrives in the mail.

 

[WaistGunner]

Thanks for the tip, bountyhunter, sounds like good ol' yankee engineering. I pulled the rubber monogrip of the 627-5, and you guessed it, the head of the strain screw was almost completely out of the frame. I tightened it until snug and it seems to have its trigger pull poundage back.

This is my wife's revolver, so we will have to remind each other to check the strain screw after each range trip, especially with the monogrip hiding the strain screw. Maybe others can learn from my dorky question. I thank you all. Waistgunner

 

[Crazy K38]

wow you guys diagnosed that VERY quickly how did you know so quick just off light strikes?

 

[tomcatt51]

wow you guys diagnosed that VERY quickly how did you know so quick just off light strikes?

This is my wife's revolver, so we will have to remind each other to check the strain screw after each range trip, especially with the monogrip hiding the strain screw. Maybe others can learn from my dorky question. I thank you all. Waistgunner

The strain screws (and the yoke screw) come loose all too often. A little blue Loctite fixes the problem.

 

[TSQUARED]

If tightening the strain screw does not solve the problem then purchase an extra long firing pin from Apex Tactical - they are easy to install. You can also try the Cylinder & Slide extra length firing pin but I prefer the Apex Tactical.

 

[buckbeans]

This subject had been discussed for many decades. Read Ed McGiverns book on trick shooting. He does not used light springs. He prefers the reliability of the factory springs to the ease of a light trigger pull using a light spring. Of course his trigger finger is the size of a county fair corn dog.