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Posted: 11/18/2007 4:14:57 PM EDT
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my buddy has a del-ton 16in midlenght upper and yesterday at the shooting range he kept having problems with the cases getting stuck, it was cycling fine but when he'd decide to stop shooting and drop the mag/clear chamber we couldn't get the bolt to come back, the gun only has 200rds or so through it, he keeps it pretty clean/oiled any ideas? ammo was wolf and brass cased mil surplus |
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If a carbine stock, first pull the stock off the tube. To do this, pull down on the stock adjustment lever( the whole lever and not just cam'd to one side) and the butt stock will pull off the back of the tube. Now with either just the tube or A-1/a-2 stock, pull down on the charging handle will giving the tube/stock a good blow off the ground (grass or carpet will work). This get the bolt unlocked and either pull the struck case with it, or at least get the bolt unlocked with the spent case still in the chamber. If the later, lock the bolt back on the catch, then use a single steel cleaning rod down the muzzle, against the web of the spent case, and give the end of the cleaning rod a sharp blow with your hand to free the case from the chamber. NOTE: you have to unlock the bolt first before you can do anything else. The bolt cams to unlock and all the pounding in the world of a rod against the locked bolt/web of the spent case will not unlock the bolt (just bend the hell out of the rod)!!!! |
i should note this is with a live round in the chamber, my mistake i didn't make this clearer but we got the case out of the chamber, i'm just trying to figure out why they're getting stuck? i've never had it happen on any of my AR's and all they've seen is wolf
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New chamber not self-polished in through live fire would be the answer to your question (combined with a powderized poly fouling that had a chance to harden/get a real good grip on both the chamber wall and the case as the rifle was allowed to cool). Chances are a few more hundred rounds of live fire with brass cases; the problem should go away (chamber self-polishing). In the mean time, confirm that the chamber is being correctly cleaned with a chamber brush since normal solvents alone will not remove polyurethane or lacquer powderized fouling. Also on the subject, have him take a good look at the chamber walls. When the barrel is cleaned, the chamber walls should be smooth as a baby’s ass with no visible reamer marks/rings. If reamer marks, or the chamber chrome coating appears to be very rough, then the barrel will need sent back for replacement since live-fire polishing will not solve/correct these defects. |
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