Was tweaking the zero on my SBR today and had what I thought was a failure to eject. After screwing around it became clear that something was preventing rounds from entering the chamber. I looked around and sure enough found the ass-end of a case and then found the front. Fortunately I had a CJ Weapons Broken Shell Extractor in my bag and finally got a chance to use it. It worked perfectly! Good thing too, because it would have shut me down otherwise.
I am going to buy another one of these and keep it on my “serious” AR while the other one can stay in my range bag.
Just one of those things. Must have been a piece of brass that got reloaded one too many times or was slightly out of spec. An 11.5" SBR has a relatively violent extraction but I am using an H2 buffer and I am not using an extractor O-ring, so it shouldn’t be too brutal.
It could also be a tight chamber, but it is a BCM so I doubt that is the reason. It’s possible, though. We’ll see down the road if it happens again.
Someone here has to have the answer to that question. I know it’s not the links though, I think it has something to do with the extraction process. I remember reading briefly somewhere that the brass gets stretched some how. I just don’t remember how, or why.
I’ve had this happen on a bench gun and found that sticking a tight fitting bronze brush up into the case did the trick. Luckily I had my cleaning kit with a bunch of different brushes.
It has something to do with the cycle of function specific to the weapon. I have heard different theories, but nothing beyond what I consider to be speculation.
I heard that it had something to do with the weapon firing from the open bolt position (rounds slamming into the breech) and then extracting so fast due to the rate of fire.
That is pretty interesting, I’ve never heard it before.
I had one stuck case down at BW a few weeks back that I was able to clear by mortaring the gun. This was an LE6920, so I assume the overall operation of the gun (compared to an 11.5") was mild enough that it tried and failed to pull out the case, vs. trying and ripping it in half.
I was told that the cartridge cases that had been fired through a SAW would not be acceptable for reloads due to the fact that headspace specification of that weapon caused excessive stretch in the web of the case as compared to the M16 series.Once resized the brass at times will clearly indicate a ringed web on the exterior.
It was recommended to inspect all the military spent cases inside and out for a ringed web,particularly after resize.High tech tool indicated to use at the time was a straightened paper clip to check the inside web of the case when going through bulk surplus brass…
Other warning was to look for deformed cartridge case rims.
