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re: ***UPDATE NO.3**My new AR is cycling .223 fine but hanging up on 5.56
Posted on 1/12/15 at 6:26 pm to dnm3305
Posted on 1/12/15 at 6:26 pm to dnm3305
For all those that are jumping on the headspacing bandwagon...
...does 1/4 of an inch out of battery sound like a headspace issue? Especially considering it is cycling .223. Before you chasing your tail with a headspace gauge that will tell you little to nothing, go find another action spring (the misnamed buffer spring) and a H2 buffer to swap in and try 5.56 again. According to PSA you have a standard weight buffer which isn't exactly the best choice for a carbine. Another thing, you are using Remington hunting ammo that is loaded a bit hotter than typical XM193 and might be masking another issue. Swap the parts out, and just use the the American Eagle ammo. Need to post pics of all the BCG parts, buffer face, and inside the upper where the BCG rides.
quote:
It seemed as if the BCG was getting caught up about .25" from being in full battery.
...does 1/4 of an inch out of battery sound like a headspace issue? Especially considering it is cycling .223. Before you chasing your tail with a headspace gauge that will tell you little to nothing, go find another action spring (the misnamed buffer spring) and a H2 buffer to swap in and try 5.56 again. According to PSA you have a standard weight buffer which isn't exactly the best choice for a carbine. Another thing, you are using Remington hunting ammo that is loaded a bit hotter than typical XM193 and might be masking another issue. Swap the parts out, and just use the the American Eagle ammo. Need to post pics of all the BCG parts, buffer face, and inside the upper where the BCG rides.
1
Posted on 1/12/15 at 7:10 pm to Clames
quote:
Before you chasing your tail with a headspace gauge that will tell you little to nothing
It will tell you if it is even safe to fire the thing with 5.56mm ammo. I don't know about you, Clames, but that's a big deal for me.
quote:
does 1/4 of an inch out of battery sound like a headspace issue?
Not necessarily, but it is something that ought to be checked - ASAP.
quote:
go find another action spring (the misnamed buffer spring) and a H2 buffer to swap in and try 5.56 again. According to PSA you have a standard weight buffer which isn't exactly the best choice for a carbine.
If a weapon cycles with 1 loading but not another, on a relatively consistent basis, it could be 1 of 1000 things, and the spring is high on the list of suspects - I do not question this. In this case, it's running with a heavier, but faster bullet, and not with the lighter, slower.
But, I would still get the headspace checked before I ran dozens or hundreds of other diagnostic rounds through - but I'm a cautious guy with firearms.
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