Problem Cocking Ruger Super Blackhawk

heavyiron

January 04, 2017 13:03

Hi Everybody,

I was at the range today and fired about 9 cartridges from a Ruger Super Blackhawk (44 Magnum) with no problems. After that I could not cock the hammer and the cylinder would not turn.

I had to pull the cylinder pin to remove the cylinder and empty it. I reassembled and spun the cylinder and cocked the hammer approximately 6 times and no problem. I then reloaded the cylinder and fired 3 more shots and it froze again. I couldn't cock the hammer. Removed the cylinder again and put it away.

Anybody got any idea what has happened ??? Something is busted but I don't know what and I haven't taken it apart yet to look. Looking for some advice on DIY repair.

Thanks for any information.

Heavyiron

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  rufe-snow

  January 04, 2017 13:22

  Last time I had those symptoms. To light reloads, ( not mine), were backing up. Causing the cylinder to bind up.
  
  When a cartridge is fired, the brass has to expand to grip the i.d. walls of the chamber. If the brass doesn't expand. It will just back up against the recoil shield on the revolver, tying it up.
  
  I made reloads with fast burning powder, and increased the load sufficiently. So that the brass would expand to grip the walls of the chamber. Without backing up, against the recoil shield.

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  TANK78Z

  January 04, 2017 15:02

  The cylinder pin on some super Blackhawks back out a little under heavy recoil ...
  This can cause hard to impossible cylinder rotation.
  Fire a few till it happens again, remove and reinsert the pin, if this clears up the problem you can get a heavier spring for the retainer button, or an improved aftermarket cylinder pin that will fix it.

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  Mark G

  January 04, 2017 15:35

  I had a similar issue with a used Smith 681 that I purchased. It took a very thorough cleaning under the extractor assembly to clear the problem. Crud was keeping the cylinder from turning. Hope this helps.
  
  Edit: Sorry. I was thinking Redhawk for some reason. Disregard.

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  charliemeyer007

  January 04, 2017 16:02

  Take it apart and clean and inspect everything.
  
  http://www.gunpartscorp.com/Manufacturers/Ruger-33474/Revolvers-40405/NewModelSuperBlackhawk-38338.htm

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  jeffb1911

  January 04, 2017 16:40

  I had one do this. There is a pin sticking down on the side of the hammer in the "inset". That stuck on mine for some reason, and it locked the gun up like you described. Part 39 in the previous link to gun parts corp.

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  mrmike08075

  January 04, 2017 18:25

  Take off the trigger gaurd
  
  Underneath is a set of action and timing Springs
  
  Flat metal like a hand with different length fingers
  
  These Springs break or lose temper causing similar problems to yours
  
  Jmho - rule snow is the greater expert imho
  
  Mike

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  tsr1965

  January 05, 2017 00:43

  Rufe is spot on in this case. I am sure that you are getting primers backing out, and putting on the brakes!

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  Mobuck

  January 05, 2017 03:05

  "The cylinder pin on some super Blackhawks back out a little under heavy recoil ...
  This can cause hard to impossible cylinder rotation.
  Fire a few till it happens again, remove and reinsert the pin, if this clears up the problem you can get a heavier spring for the retainer button, or an improved aftermarket cylinder pin that will fix it."
  
  Try this before taking anything apart. The fired cases from the previous session should tell you if the primers are "backing out".

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  M1A762

  January 05, 2017 03:57

  quote:Originally posted by mrmike08075
  Take off the trigger gaurd
  
  Underneath is a set of action and timing Springs
  
  Flat metal like a hand with different length fingers
  
  These Springs break or lose temper causing similar problems to yours
  
  Jmho - rule snow is the greater expert imho
  
  Mike
  
  
  Ruger single action revolvers use coil springs. There are no flat springs. Coil springs for the Cylinder Latch, Pawl, Cylinder pin latch, hammer plunger, and mainspring.
  
  The OP's problem is either ammo related or the cylinder pin is working loose. It could also be the small pin on the hammer that retains the plunger is working loose, but that is very uncommon.

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