3" M 629 - weird issue

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So, my friend brought his M629 to the gunsmith because he said he was getting misfires. Gunsmith couldn't replicate the problem as I recollect but put a lot of ammo through it trying.

Friend takes it back and when he loads it, just before he closes the cylinder, the whole thing falls apart. What the....?

So he brings it back. Gunsmith fixes it. What happened?

Gunsmith says he had to replace a crane screw on the frame that apparently had become worn, due to all the successful test fires.

Does that make sense to y'all? Even if he fired it 50 times with full house 44 magnum rounds why would this happen?

***GRJ***
 
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Since it is impossible to understand what you mean by "the whole thing falls apart," it is hard to even guess. I doubt the sideplate fell off, allowing all of the action parts to fall out.

Since you mention the crane screw later in your post, I assume perhaps you mean that the cylinder fell out of the frame to the front when the cylinder was swung out.

Possible answers depend in large part on whether the new spring loaded crane screw was on this revolver (you don't give the dash engineering change), but if this revolver has the spring loaded crane screw, it is likely that it was either a defective screw or the gunsmith damaged it either on disassembly or upon reassembly.

Total speculation here, but those are possible causes.
 
Yep, sorry, I simply meant that the cylinder fell off, certainly the whole gun did not fall apart. SORRY!

I'll get the dash over the weekend and update this.

***GRJ***
 
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