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Old 01-09-2015, 06:22 PM   #1
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Revolver Magic

So today I picked up a box of S&W pistols from one of the gun shops I do work for. I first worked on a US Property marked 38, dated to 1933. The hammer wouldn't move, neither would the cylinder. The other pistol I grabbed from the box was having the same issues. It is a Model 66. On both pistols, I pulled the side plate and removed the cylinder and crane. After working the trigger and hammer, but without cleaning or doing anything else, the triggers and hammers started working. I reassembled and did a function check, with no issues on either one. I'm just curious if any of you have had this happen. I plan on pulling them back apart tomorrow and cleaning and lubricating them.
 
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Old 01-10-2015, 06:06 PM   #2
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It's often an ejector rod unscrewing.
Usually, the problems appears as an inability to open the cylinder, but it can cause the cylinder to bind, which prevents the action from working.

Another cause is grit, burned powder, or other debris caught under the ejector.
This prevents the ejector from fully seating into the recess of the cylinder which has the effect of making the cylinder and ejector assembly too long in the frame.
This causes binding and the resulting action problems.
Often the debris is so small as to be almost impossible to see and may require scrubbing with a brass toothbrush.

In both cases, the action problems disappear once the cylinder is open.

Also, with used guns, God knows what someone may have done to them.
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Old 01-10-2015, 09:19 PM   #3
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I have also seen old revolvers locked up due to old oil that has dried up and become solid. Usually that presents as a thick brown/black semi-solid. You'll see it as soon as the side plate is removed.
 
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