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5/20/2013 3:28:14 AM EDT
I see other AR's at the range and they eject the case at about 4 or 5 oclock slightly behind the shooter. When I shoot mine it ejects the cases at about  2 oclock to the right and in front of me. Why is that ? I am loading 24.0 of H335 with 55 gr bullets.
5/20/2013 3:41:21 AM EDT
[#1]
Sounds like over gassing.
5/20/2013 4:01:44 AM EDT
[#2]
I had a RRA that did the same thing and there was nothing wrong with it.  I got spoiled with that rifle as all of my bench brass was in a convenient pile.  In all the years I have been shooting the AR15/M16 platform, I have found that it often just depends on the rifle.

My SIG 556 throws brass at 2:00 as well, just 25-30 feet out in front of me...Now that took some getting used to.
5/20/2013 4:04:11 AM EDT
[#3]
i could mean a lot of things, weak ejector, under gassed, wek extraction OR nothing at all.



theres a chart in the faq as well as read armalites tech note for tuning.
5/20/2013 4:05:08 AM EDT
[#4]
Knock it off, this isn't General Discussion - Eric802
5/20/2013 5:03:25 AM EDT
[#5]
If it operates reliably, just shoot it.
5/20/2013 6:00:23 AM EDT
[#6]
Agree. Nothing to see here.
All my 5.56 ammo lands at 2 all my .223 ammo lands at 4. As long as you get strong ejection, no doubled feeds & the thing cycles free of problems your good.
5/20/2013 6:24:22 AM EDT
[#7]
Quoted:
If it operates reliably, just shoot it.


This.
5/20/2013 6:37:44 AM EDT
[#8]
Quoted:
Sounds like over gassing.


sounds like a non-issue
5/20/2013 7:04:02 AM EDT
[#9]
Agree with most of the sentiment above, it is fine.
Anything between 1 and 5 on the clock is working.

If it bothers you, you can do any one or a combination
of the following to fine tune your impulse -
-use adjustable gas block
-use heavier 'full auto' bcg
-use heavier buffer (easiest and usually cheapest)
-use heavier buffer spring
-use heavier bullets
5/20/2013 7:45:57 AM EDT
[#10]
If it is cycling correctly most likely just run it and everything is fine.  Check the head for divot and smear marks.  This can be a sign of overgassing.  This is harder on and creates more wear on the parts.  Remedies have been listed.  

 
5/20/2013 8:54:41 AM EDT
[#11]
The ammo makes a difference(pressure loading, type) so there could be no fix.
5/20/2013 9:28:53 AM EDT
[#12]
My RRA midlength upper throws brass @ 2 o'clock and about 4' away. It's ran flawlessly for going on 4k rounds so I don't worry about it.
5/20/2013 9:39:12 AM EDT
[#13]
Agreed one of the fixes is ammo types.  If your gun does not run well on a certain ammo don't use it.  Sounds like OP is reloading.  Again if the gun runs fine with clean brass just run it.  If brass presents with with divots and smears, be aware your parts are working harder.  Just have a few extras on hand and no sweat.  An adjustable gas block that is easy to use is a great product.  Some are easier to use than others.




Quoted:



The ammo makes a difference(pressure loading, type) so there could be no fix.

 
5/20/2013 10:21:56 AM EDT
[#14]
There is nothing to fix and don't worry about the so called chart. Example my 11.5 with a H3 buffer ejects at 2 o'clock. My 16" with an H2 buffer ejects at 4 o'clock. It just depends on your gas port size and buffer weight.
5/20/2013 11:30:56 AM EDT
[#15]
Thank you for the replies. It does cycle fine with no problems, never had a FTF or fail to fire.
I just wanted to ask about it because you guys on here certainly know more than I do.
5/20/2013 1:00:32 PM EDT
[#16]
Quoted:
Thank you for the replies. It does cycle fine with no problems, never had a FTF or fail to fire.
I just wanted to ask about it because you guys on here certainly know more than I do.

The same rifle will eject rounds loaded to different power levels at different angles.  Full power rounds like M855 should provide enough power to bounce the cases off the brass deflector and thus go forward, while much lighter loads will have less power and will head out at 4:00 and even miss the deflector.  What you're seeing when one rifle ejects at one angle and another ejects at some different angle is the combination of different power from the ammo being used and different "tuning" in terms of the buffer and gas system.
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