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Posted: 11/23/2013 2:58:13 PM EDT
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Hey everybody, so I do suck at using the search function, but I have a question for my new build and the way it extracts shells. I am not terribly worried about it, but I am still reading and studying about the AR platform. Anyways, to the question.
I built my AR: DD 14.5" mid-length barrel Aero Precision upper and lower standard buffer tube kit with I believe a standard weight carbine buffer Centurion Arms C4 bolt carrier group I reloaded my ammunition: Xtreme 55gn M193 bullet 24.4gns Hodgdon H-335 powder PMC cases Winchester small rifle primers I have been reading that the desired extraction pattern is at the 3 o'clock position. I also read that if it ejects shells at the 4 or 5 o'clock position than a lighter buffer is needed or a different extractor spring is needed. I see definite marks where my shells are hitting the shell deflector, which I wouldn't think twice about, because thats why its there. The only thing it makes me wonder is if my shells should be ejecting at the 3 o'clock and they are ejecting farther back. With already having a standard weight buffer, I can't really go lighter. Is there a fix for this or just don't worry about it? It shoots great, rounds right where I want them, zero malfunctions, everything went bang. Thanks guys! Video of shells ejecting if this helps. I don't know how the video thing works, but copy and paste this into your browser and it works. http://youtu.be/EZcDjSCrD2s Pictures: http://i848.photobucket.com/albums/ab43/surfish/IMAG0952_zps663d99d2.jpg http://i848.photobucket.com/albums/ab43/surfish/IMAG0942_zps3c3d12a9.jpg |
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Ejection. Ejection pattern. As long as the cases are coming out of the gun, your ejection pattern is OK, so you should not be worried about it. Your brass deflector is going to get banged up. You say it shoots great and ejection in the video looks fine. Awesome. Thanks. Yeah I'm not worried about getting the deflector dinged, just want to make sure I have it all tuned correctly. I love this gun. Thanks. |
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Nice rifle man. Don't worry about that pattern. If you feel like it is over or under gassed or start having issues down the road worry about it but getting a dinged up deflector is no big deal. Which rail is that and how do you like it? Thanks for the reply. It is the Knight Armament URX III with the flip up sight. It is a great rail! Besides having a proprietary barrel nut which requires a special tool. It is very light weight. Thanks again! |
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Who invented that GD ejection pie chart? As stated above if your rifle is successfully ejecting and feeding who give a shit where it's going? You mean this one? 
I'm surprised it's not been posted yet. 
But yea, if cases come out, live rounds go in, and it locks back on an empty mag with whatever you're shooting through it, I'd leave it alone... |
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Who invented that GD ejection pie chart? As stated above if your rifle is successfully ejecting and feeding who give a shit where it's going? This, that chart is a diagnostic tool to help people who have a problem, not to consult to see if you have a problem. |
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Who invented that GD ejection pie chart? As stated above if your rifle is successfully ejecting and feeding who give a shit where it's going? You mean this one?
I'm surprised it's not been posted yet. http://i138.photobucket.com/albums/q260/robe2103/AR_Ejection.jpg But yea, if cases come out, live rounds go in, and it locks back on an empty mag with whatever you're shooting through it, I'd leave it alone... Nice chart. And, will do. I'm happy more than happy with it. Thanks! |
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Nice chart. And, will do. I'm happy more than happy with it. Thanks! Quoted:
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Who invented that GD ejection pie chart? As stated above if your rifle is successfully ejecting and feeding who give a shit where it's going? You mean this one?
I'm surprised it's not been posted yet. http://i138.photobucket.com/albums/q260/robe2103/AR_Ejection.jpg But yea, if cases come out, live rounds go in, and it locks back on an empty mag with whatever you're shooting through it, I'd leave it alone... Nice chart. And, will do. I'm happy more than happy with it. Thanks! as said before but to further ease your mind. the chart was made to help diagnose an existing problem, not to make you think there is a problem if you are not really experiencing one. easy analogy: coughing may be a symptom of lung cancer, but just because you're coughing it doesnt indicate that you have lung cancer. if you're not experiencing any malfunctions, don't worry about your ejection pattern. different loads will eject in slightly different areas |
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as said before but to further ease your mind. the chart was made to help diagnose an existing problem, not to make you think there is a problem if you are not really experiencing one. easy analogy: coughing may be a symptom of lung cancer, but just because you're coughing it doesnt indicate that you have lung cancer. if you're not experiencing any malfunctions, don't worry about your ejection pattern. different loads will eject in slightly different areas Quoted:
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Who invented that GD ejection pie chart? As stated above if your rifle is successfully ejecting and feeding who give a shit where it's going? You mean this one?
I'm surprised it's not been posted yet. http://i138.photobucket.com/albums/q260/robe2103/AR_Ejection.jpg But yea, if cases come out, live rounds go in, and it locks back on an empty mag with whatever you're shooting through it, I'd leave it alone... Nice chart. And, will do. I'm happy more than happy with it. Thanks! as said before but to further ease your mind. the chart was made to help diagnose an existing problem, not to make you think there is a problem if you are not really experiencing one. easy analogy: coughing may be a symptom of lung cancer, but just because you're coughing it doesnt indicate that you have lung cancer. if you're not experiencing any malfunctions, don't worry about your ejection pattern. different loads will eject in slightly different areas Cool. Thanks for that. I did notice that factory Federal X193 ejected slightly different than my reloads. Good to know. |
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I like pie. OP, if the gun ejects consistently, it really doesn't matter which direction it throws the brass. That brass smear on your case deflector shows that the rifle ejects backward, the cases bounce off the deflector, and then they go either to the right, or forward, or both. This is entirely normal with full-power ammunition. The "chart" showing 3:00 to 4:00 ejection as being "ideal" is misleading. It's only useful when there is a problem with ejection. If the gun works all the time, then the only reasons to worry about where it throws the brass are where the shooter to your right is, and where you're going to have to go to police your brass. |
| I'm more interested in proper weapon functioning and uniform ejection rather than what direction they are going. When shooting from a stationary position at a stationary target, my cases will fall withing a few inches of each other. This tells me that I have consistancy in the rounds and weapon function. If I had cases getting tossed all over the place I'd be looking at what was making that happen. The first thing I'd look at is whether I'm getting a consistant powder charge. |
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Pfff, go buy a Cetme or other G3 clone and talk to me about brass ballistics... Quoted:
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My ejection has pissed off a couple fellow shooters before... Since it throws brass pretty damn far.... Nice rifle op Pfff, go buy a Cetme or other G3 clone and talk to me about brass ballistics... lol been down that road . people in the next county are complaining about brass hitting there roof. |
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I'm more interested in proper weapon functioning and uniform ejection rather than what direction they are going. When shooting from a stationary position at a stationary target, my cases will fall withing a few inches of each other. This tells me that I have consistancy in the rounds and weapon function. If I had cases getting tossed all over the place I'd be looking at what was making that happen. The first thing I'd look at is whether I'm getting a consistant powder charge. Awesome. Thanks. Yes, I am getting very consistent ejection. My brass lands in the exact same spot every time (as seen in the video). Thanks everybody for your input. It has been extremely helpful, and helped me understand my rifle even more. Like I said before, so far (only 60 rounds factory ammo and 50 rounds reloads) it has functioned flawlessly. I have ALOT more shooting to do! :) |
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This, that chart is a diagnostic tool to help people who have a problem, not to consult to see if you have a problem. Quoted:
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Who invented that GD ejection pie chart? As stated above if your rifle is successfully ejecting and feeding who give a shit where it's going? This, that chart is a diagnostic tool to help people who have a problem, not to consult to see if you have a problem. I have never been given any type of ejection chart for any diagnosis purpose in any Colt Armorer classes I have attended. As for ejection patterns they will be different depending on barrel length, buffer weight and ammo used. I have a Colt 6920 with an H2 buffer and it ejects at 4-5 o'clock and my 6933 with an H3 buffer at 1-2 o'clock. So as said earlier if its ejecting and extracting with no problems and the rifle is running then don't worry about the pattern or even look at the chart. 
Diagnosis for any issue should start at the cycle of operation. |
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