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Posted: 7/18/2009 11:27:32 AM EDT
| I went to shoot my sig 556 for the second time yesterday, when i was using 5.56 it cycled perfectly fine. when i went to use .223 the gun would not cycle. it would kick the spent shell out then closed the bolt without picking up a new round. If i turn it to the second gas setting it starts to work okay but has the occasional malfunction. Does antone else have this problem? |
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Quoted:
could it possibly be a break in issue where it will go away after i put a few hundred rounds through it?? In all likelihood, yes. Shoot more rounds through it, clean it out thoroughly, and put some good gun grease on the action rails. Give it a few hundred rounds and see what happens. |
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Quoted:
i was using sellier and bellot and black hills .223. it wouldnt work with either. but it works wigth all 5.56 Quoted:
I went to shoot my sig 556 for the second time yesterday, when i was using 5.56 it cycled perfectly fine. when i went to use .223 the gun would not cycle. it would kick the spent shell out then closed the bolt without picking up a new round. If i turn it to the second gas setting it starts to work okay but has the occasional malfunction. Does antone else have this problem? .223 is fairly underpowered compared to 5.56. I'm actually surprised you had problems with S&B though. They say it's .223, but it's actually 5.56 they've got packed in those boxes. That's my favorite ammo, too bad the price for it's gone through the roof. I wish I could get it for $120/1000 again. Did you break in the rifle properly? When you got it did you totally clean it, then put good grease on the various rails and cycle it right around 200 times to deburr the system. Since you've already shot it, I'll assume you've got the thing good and deburred. Make sure you use good grease on your rails at first. Not a massive amount either, just high quality stuff. Mil-Tech grease works amazingly good. I try to put right around 1000 rounds through any rifle before I even start to look at reliability. Was your magazine spring powerful? That'll gum up the system and retard the rearward travel of the bolt just enough so it'll short stroke and not pick up the next round in the stack. Try a mag that doesn't have a hyper power spring. If all else fails look at your piston setting deal. I've got some SA80 Radaway Green ammo that'll short stroke everything I put it in except my mutt G36. |
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I have some underpowered ammo that never cycles in my Bushmaster AR. I tried it in my 556 ER hoping for better reliability but at the normal pressure setting it's only semi-reliable. At the higher setting it cycles flawlessly, but I am wondering if there's a danger of harming my 556 if I fire regurlarly at the higher setting. I'm of the mind that if it's (the ammo) weak at the low setting it should be fine and produce normal pressures at the higher. Any thoughts/opinions would be greatly appreciated. |
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