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Posted: 10/14/2004 8:45:58 PM EDT
My friend and I were out shooting our AR-15's and he had his new Bushmaster. His gun was firing but when the bolt came back to shove another round in the chamber, it would not catch the bullet, the bolt would just go forward. He had to pull back the charging handle to load another round, then he would shoot it and the same thing would happen again. I had my AR-15, so we started switching parts. We finally found out what was wrong. Can any of you brains tell me what was wrong????? I will post the answer later.
Link Posted: 10/14/2004 8:47:23 PM EDT
Mag aint in all the way?


Hell I aint a damn expert...
Link Posted: 10/14/2004 8:48:23 PM EDT
Bad Mag?
Link Posted: 10/14/2004 8:49:54 PM EDT
gas problem?

loose gas key on carrier?


mag. problem?



I'm done.
Link Posted: 10/14/2004 8:51:48 PM EDT
Every problem can be figured out by reviewing the 8 cycles of function

1. Feeding
2. Chambering
3. Locking
4. Firing
5. Unlocking
6. Extracting
7. Ejecting
8. Cocking

He had a feeding problem. Check the magazine or the magazine catch.


Link Posted: 10/14/2004 8:52:10 PM EDT
MAG NOT IN ALL THE WAY OR BAD MAG.
Link Posted: 10/14/2004 8:53:33 PM EDT
I'd have guessed bad mag...usa perhaps?
Link Posted: 10/14/2004 8:53:56 PM EDT
ok guys, I will give you a hint, it has nothing to do with the mag.
Link Posted: 10/14/2004 8:54:09 PM EDT
The mag was loaded with .222s?
Link Posted: 10/14/2004 8:55:20 PM EDT
All of the above + Wolf ammo.
Link Posted: 10/14/2004 8:56:01 PM EDT
buffer spring was too "heavy"
Link Posted: 10/14/2004 8:56:41 PM EDT

Originally Posted By smokey:
ok guys, I will give you a hint, it has nothing to do with the mag.



Either way, it was still a feeding problem. A fail to feed...hmmm...damaged bolt, incorrect ammo, unlined gas rings,...
Link Posted: 10/14/2004 8:57:52 PM EDT
For some reason short stroking? Spring too heavy?
Link Posted: 10/14/2004 8:58:27 PM EDT
the ammo he was shooting was short stroking by not having enough powder to move the bolt all the way back for it to strip a new cartridge from the mag
Link Posted: 10/14/2004 8:58:44 PM EDT
Short stroking?

Gas problem?

Danny
Link Posted: 10/14/2004 9:00:48 PM EDT
I had the same thing happen to mine. Brand new, wouldn't feed, wouldn't stay open on the last shot. It turned out that the gas tube was slightly bent. That my 2 cents.
Link Posted: 10/14/2004 9:01:12 PM EDT

Originally Posted By bullet-camp-targets:
the ammo he was shooting was short stroking by not having enough powder to move the bolt all the way back for it to strip a new cartridge from the mag


Is this possible? They are gas operated...
Link Posted: 10/14/2004 9:04:00 PM EDT
gas problem - underpowered ammo not having enough gas to push it back, or the recoil spring is for a different caliber and was stronger than the .223 was designed for?
Link Posted: 10/14/2004 9:04:32 PM EDT
Ammo
gas rings
blockage or dent in the gas tube
loose carrier key
heavy spring/wrong buffer.
Dent in the buffer tube
Insanely heavy hammer sprin, I'm reaching on that one.
Link Posted: 10/14/2004 9:04:41 PM EDT
Quit Using USA brand steel Mags
Link Posted: 10/14/2004 9:07:16 PM EDT
The Suspense is Killing Me!

Danny
Link Posted: 10/14/2004 9:07:34 PM EDT
Had the same problem, mine was a gas problem, I was shooting a regular buffer out of a 11 inch barrel and just too much, my wife says I have too much gas to
Link Posted: 10/14/2004 9:09:28 PM EDT

Originally Posted By leelaw:
gas problem - underpowered ammo not having enough gas to push it back


Holy crap. I would think that if there is enough gas to push the bullet out of the muzzle there would be enough to blow the bolt back.
Link Posted: 10/14/2004 9:09:38 PM EDT
We switched every part that we could think of, when we put my buffer in his gun, it cured the problem. He went and bought a new buffer and has had no problem since, not sure what was wrong with his, they both looked the same. Thanks for your replies.
Link Posted: 10/14/2004 9:09:41 PM EDT
[Last Edit: 10/14/2004 9:27:35 PM EDT by R0933C]
Edit: Just had a similar problem the other day. You probably have a ligher buffer that was replaced with a heavy one when you had the problem. The heavy buffer slows the recoiling bolt carrier assembly to the point that it fails to travel rearward far enough to clear the rear end of the next round, thus a "bolt over" results.

Were the unchambered rounds dented by the bolt? That would confirm the diagnosis.
Link Posted: 10/14/2004 9:22:43 PM EDT

Originally Posted By Zoomer:
All of the above + Wolf ammo.



+1
Link Posted: 10/14/2004 9:25:58 PM EDT
we didnt look at the round.so I dont know.
Link Posted: 10/14/2004 9:36:27 PM EDT

Originally Posted By OKLAHOMA_LAWMAN:

Originally Posted By Zoomer:
All of the above + Wolf ammo.



+1



Damn you tards need to get off the wolf ammo kick, the stuff is great. I can just see that I'll have to dump a beta on video just to prove to you that that, for plinking ammo at least, wolf is awesome.
Link Posted: 10/14/2004 9:52:02 PM EDT
Link Posted: 10/14/2004 9:54:36 PM EDT

Originally Posted By 82ndAbn:

Originally Posted By Gunbert:

Originally Posted By OKLAHOMA_LAWMAN:

Originally Posted By Zoomer:
All of the above + Wolf ammo.



+1



Damn you tards need to get off the wolf ammo kick, the stuff is great. I can just see that I'll have to dump a beta on video just to prove to you that that, for plinking ammo at least, wolf is awesome.



But it won't be at Gunstock...will it?





Sadly, not this year. I swear I'm going to make next years though....
Link Posted: 10/14/2004 9:57:36 PM EDT
The far end of the bolt release/lock comes up and is caught between the far rail (underside) of the bolt.
Rounding off of that edge of the release/lock will remedy that problem.

Link Posted: 10/14/2004 10:04:22 PM EDT
Mag's in upside down. I do it all the time. Matter of fact, I've painted big arrows on all my mags along with "Remember! Bullet side UP!"
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