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![]() | #1 |
Member Join Date: Jan 2011 Location: Newton, KS
Posts: 64
| Light DA Firing Pin Hits on S&W 19-5
Short history: You've seen this in other threads. I got it at a gun show as a fixer-upper. Pistol was a Phillipines police trade in, Model 19-5, much (MUCH) work done by some previous owner. Ball detente on the crane, top strap tapped for a scope, etc. Dealer I got it from replaced the bobbed hammer with a target hammer. There's a set-screw in the bottom of the grip that will allow partial extraction of the strain screw allowing reduced DA pull. Or there was, that's now an expoxy filled hole. I've got all the issues it had with end-shake and timing worked out and took it to the range to very carefully test-fire it for a bit. Shooting a light load behind a 158gr SWC on Winchester brass with Federal small pistol primers. SA pull was nice, accuracy was exactly what I would expect from even an abused 19: good. OK. Double-action drills. The routine became bang bang click. About 3 per second double-action (I'm not Elmer Keith). Following "click" looked to make sure and the cartridge had not fired, barely a dimple on the primer. Those that did fire had a good solid hit on them. Back home and tore it all down. No binding or problems with the lockwork. I've ordered a new mainspring and tension screw from Numrich. Anyone have other suggestions of likely culprits for very light strikes in DA? Thanks. Dave |
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Senior Member Join Date: Apr 2010 Location: North Carolina
Posts: 724
| Quote:
The "set screw" is not a DA trigger pull adjuster. It's supposed to be screwed all the way in. First things first... If the screw is missing...what keeps tension on the mainspring? | |
![]() | #3 | |
Member Join Date: Jan 2011 Location: Newton, KS
Posts: 64
| Quote:
Clearer(ererer)? A picture is worth at least 5 words: ![]() Dave Last edited by DTHughes; 01-10-2012 at 05:16 PM. Reason: Add photo link. | |
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![]() | #4 |
Senior Member Join Date: Jun 2001
Posts: 1,800
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Other possible reasons for light strikes in a S&W: Excess end shake of the cylinder. Improper head space. Fouled chambers. Short, bent, wrong, or worn firing pin. As above, altered or weak mainspring---Shortened strain screw. Hammer/trigger altered, worn, or broken causing short hammer fall in DA. Bent/broken, corroded/fouled hammer pin causing mushy hammer fall. Interference with the hammer causing mushy hammer fall. |
![]() | #5 |
Senior Member Join Date: Apr 2010 Location: North Carolina
Posts: 724
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I think that pretty well covers it. Look at the breechface while you're at it and check for deformation around the firing pin/hammer nose hole. I've run into that a couple times. |
![]() | #6 |
Member Join Date: Jan 2011 Location: Newton, KS
Posts: 64
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Thank you, gentlemen. You've given me some more food for thought and places to explore. Dave |
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Junior Member Join Date: Oct 2010 Location: Bergen County, PDRNJ
Posts: 23
| Quote:
Welcome to Power Custom | |
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