M1 grand problem Slam Fire, 2&3 Rnd Burst

FrancF

February 16, 2003 16:02

I took out my M1 Grand to the range and for some Stupid reason I am getting a slam fire or if you will, 2 and 3 round bursts out of it. The part that stumps me is it always seems to be on Round # 4 & 5 or #4, 5, 6,.

I am using GI ammo. I pulled it apart and nothing looks warn. and It does not happen all the time. Now This will sound real real stupid and It's something I have not checked yet. Would it matter how I load the clip (1st Round Right or first round Left?)

Thanks for your help in advance.






God Bless our Troops

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  Der Gebirgsjager

  February 16, 2003 18:13

  I doubt if we can solve this in just one post, as the possibilites are several. To answer your last question first (because it is the easiest), no--right or left first round would not cause your rifle to go full auto. There was, at one time, a second round jamming problem caused by which side the first round was on, but it was ironed out. Now, as to what would cause your problem: (1) Normally Garands do not slam fire. It would be possible if there was crud in the firing pin channel in the bolt which held the firing pin forward and protruding from the face of the bolt; but normally it retracts into the face of the bolt. If this was the case, I would expect to see holes in the primer cup in the fired brass. (2) A worn sear in the trigger group, or a worn hammer hook. If your rifle has been assembled from parts, the parts may have been refinished and the wear may not be readily apparent. A test would be to swap a trigger group from another Garand and see what happens. (3) A civilian-made receiver which is not made to mil-spec. Exactly how this would cause the problem is too complicated to explain, as it could cause the problem in more than one way. Suffice it to say that if your receiver was made by The Federal Ordnance Corp. they had a recall for just this problem in the 1980s. I have also heard of this occurring with some Lithgow receivers. Check these things out and get back to us.

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  king999

  February 17, 2003 07:21

  Let's look for something simple. There is ONE item that could produce BOTH of your difficulties: A defective or dirty firing pin! It could be bent, poor fit in its channel, dirt in the channel, too long, or too sharp. Something that would cause it to be too far forward would cause both of your problems. Start with a thorough cleaning. Go further if you have to.
  Have fun, be careful!!
  Morty

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  king999

  February 17, 2003 07:21

  Let's look for something simple. There is ONE item that could produce BOTH of your difficulties: A defective or dirty firing pin! It could be bent, poor fit in its channel, dirt in the channel, too long, or too sharp. Something that would cause it to be too far forward would cause both of your problems. Start with a thorough cleaning. Go further if you have to.
  Have fun, be careful!!
  Morty

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  drawn

  February 17, 2003 08:36

  Be sure the rifle is firmly against your shoulder with each shot, especially on a bench. If it's loose you could be experiencing slight bump fire.
  
  "LIFE IS NOT A JOURNEY TO THE GRAVE WITH THE INTENTION OF ARIVING SAFELY IN ONE PRETTY AND WELL PRESERVED PIECE, BUT, TO SKID ACROSS THE LINE BROADSIDE, THOUGHRLY USED UP, WORN OUT, LEAKING OIL, SHOUTING GERONIMO!!"

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  Shootist3006

  February 17, 2003 08:50

  After you clean and inspect the firing pin, check the sear and the rear hammer hooks. Sound like those are the most likely culprits.
  
  Quod principi placuit legis habet vigorem.Semper Fidelis

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  Sunray

  February 17, 2003 10:37

  Doesn't matter how the clips are loaded. When Garands were first used, you had to load 'em with the top round on the left, I think it was, or they'd jam on the seventh round. That was fixed at the factory.
  Garands do slam fire but usually due to broken or worn parts. A visual inspection may not show anything. Do not shoot it until you get it fixed. Slam fires are also known to happen before the acion is closed. Mucho bad ju-ju. A slam fire is different than it going FA. FA is definitely worn or broken sear parts. Change the sear and the hammer. Although it could also be pins coming loose.
  Unauthorized FA, while dangerous, is kind of exciting though isn't it?

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  Warpig883

  February 17, 2003 13:54

  soft primers
  
  Even CMP warns about this.
  
  moc.murofsmraerifeht

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  gunnut505

  February 17, 2003 17:02

  Had the same sort of (scary/enjoyable)experience with a CBC copy of a Nylon 66-cleaned it and it never happened again-might be extra cozzmoline, eh?
  
  If you know it all; you must have been listening.WEAR EAR PROTECTION!

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