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Posted: 8/26/2014 5:59:39 PM EDT
[#1]
Have the headspace checked. Were you trying to fire reloads?
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Posted: 8/26/2014 5:59:51 PM EDT
[#2]
Start off by reading the owners manual of the rifle,
If the rifle did not come with a owner manual, then here is one that will work fine for the rifle, http://www.ar15.com/content/webPDF/manual_bushmaster.pdf The reason that I bring up the owners manual, is that the rifle need to be cleaned to remove all the storage grease, including using a chamber brush with CLP by hand to clean the chamber, then the upper bearings areas of the rifle correctly CLP lubed before the rifle is first fired. From here, we get into charging the weapon, and as will be pointed out in the owners manual, you need to pull all the back on the charging handle, then let go of the charging handle so the B/C moves forward on it own to strip the round out of the mag, then correctly lock the bolt up. Hence if you try to ride the charging handle back forward, the bolt will not fully lock up, and in turn, the back of the Carrier will be blocking the firing pin from reaching full protrusion when the hammer strikes the FP. As for clearing a round stick in the chamber (either fired or live), page 53 of the above manual will show you the "Mortar Method to clean the round correctly (read do not beat on the charging handle with a hammer to clean the round, you will only break the charging handle). Once you have the rifle correctly cleaned and lube, are correctly charging the rifle so the bolt correctly locks up, then see if it will run correctly. |
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Posted: 8/26/2014 7:28:56 PM EDT
[#3]
May I suggest that when a round is stuck in the chamber, instead of taking a hammer to the charging handle, perform the "mortar" maneuver.
To mortar your rifle, first if it has a collapsible stock - collapse it. Second, get down on one knee, hold the rifle vertically with the muzzle up, pull back on the charging handle, while holding firm pressure on the charging handle slam the rifle butt to the ground from a height of about 6 - 8 inches. Repeat as necessary. The inertia of the BCG will force the bolt to open. If the casing is stuck bad enough you might rip the head off the case but at least the bolt will be open. Also, get a proper .223/5.56 chamber brush and scrub the chamber profusely with a good gun cleaner. Often times a round will get stuck in the chamber if the chamber is not clean. It might look clean but it is not hard to overlook foreign material in the chamber. |
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Posted: 8/26/2014 7:58:32 PM EDT
[#4]
Thanks, for the advice guys, I will give this mortaring technique a try. Also the rounds I fired were in fact reloads from a local dealer.
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Posted: 8/26/2014 9:36:56 PM EDT
[#5]
Quote HistoryQuoted:
Thanks, for the advice guys, I will give this mortaring technique a try. Also the rounds I fired were in fact reloads from a local dealer. Get an ammo test gauge!!!!!! This will allow you to check the reloads to make sure that they where fully resized to spec, they where correctly OAL trimmed, and that they where not over bullet crimped to cause the case shoulders to be slightly bulged out as well. In this link, he is testing just cases, but the gauge works to test reloaded ammo as well in the same manner. http://www.stu-offroad.com/firearms/reloading/casegauge/casegauge-1.htm Link for a test gauge in the states, but you should be able to find/order it locally abroad instead. http://www.adorama.com/LY7832323.html?cvosrc=cse.google.LY7832323&cvo_cid=38589028051&gclid=CJGC5qvcssACFQaCMgodzG8AsQ |
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