Posted: 5/19/2012 11:56:14 AM EDT
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I purchased a carbine rifle kit a while back and finally had time to shoot it and noticed that it was putting two gouges in the neck of every spent case. http://img402.imageshack.us/img402/8718/dsc00002er.jpg I sent an email to customer service and they mentioned it could be a bad extractor, but that doesn't make sense to me because the rifle doesn't have any problem extracting the cases and it is happening at the top of the case. There looks like there are two little burrs in the chamber that is putting these two gouges in the cases. I have cleaned the rifle several times and the problem still exists. It might be hard to see in the picture, but it digs into the case and shaves a little brass off. I haven't received an email back from their initial response on Monday so I thought I would post it on the forum so others could chime in. I figure they might be a little swamped from last weekend. I am also having trouble with the accuracy of the rifle. I'm getting over 4" groupings at 25 yards. It even has trouble hitting a water bottle at that distance. I have the handguard rested on a solid surface and the gun is steady when I am shotting it. I hold my breath and have a two stage Geiselle trigger installed. I am using XM855, but I think it would get better groupings then what I am getting at such a short distance. I don't have trouble getting good groupings with other rifles, so I don't know what is going on. Could there be something wrong with the barrel?
Thanks for the help. Edit: Here is a link to the rifle kit that I had ordered back in February http://palmettostatearmory.com/index.php/ar-15-05/rifle-kits/16-m4-cmv-chrome-lined-premium-rifle-kit.html. |
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If you can see the burrs in the chamber, just ask PSA for a new upper in exchange. They stand behind their product and will make sure you are satisfied.
I would post over in their section of the INDUSTRY forum here on AR15.com. 4 inches at 25 yards is not right. Swap it out. |
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Keep me posted on what you find out. I took my new PSA M4 out yesterday and was also getting worse than expected groups. It's not me as with another M4 I am getting 1" groups but with this new rifle more like 12". I haven't looked for any burs or case indicators of other issues but I will.
Send me a PM when you find out something. |
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Quoted:
I purchased a carbine rifle kit a while back and finally had time to shoot it and noticed that it was putting two gouges in the neck of every spent case. http://img402.imageshack.us/img402/8718/dsc00002er.jpg I sent an email to customer service and they mentioned it could be a bad extractor, but that doesn't make sense to me because the rifle doesn't have any problem extracting the cases and it is happening at the top of the case. There looks like there are two little burrs in the chamber that is putting these two gouges in the cases. I have cleaned the rifle several times and the problem still exists. It might be hard to see in the picture, but it digs into the case and shaves a little brass off. I haven't received an email back from their initial response on Monday so I thought I would post it on the forum so others could chime in. I figure they might be a little swamped from last weekend. I am also having trouble with the accuracy of the rifle. I'm getting over 4" groupings at 25 yards. It even has trouble hitting a water bottle at that distance. I have the handguard rested on a solid surface and the gun is steady when I am shotting it. I hold my breath and have a two stage Geiselle trigger installed. I am using XM855, but I think it would get better groupings then what I am getting at such a short distance. I don't have trouble getting good groupings with other rifles, so I don't know what is going on. Could there be something wrong with the barrel? Thanks for the help. Like was said, PSA will take care of you cisco. RStephan, I find it almost as hard to believe you are getting 1" groups with an M4 as I do 12". lol!  this was at 100 yards with both Rifles? I do have one complete Spikes rifle that shot loose groups at first ( not12") but groups tightened up once I got some rounds through it.
Can you both post pics of your new PSA rifles? RStephan, could you post a pic of the rifle that shoots 1 MOA? I'd like to see your setup. |
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Maybe the barrel has to be taken off to find the proof mark? I won't mess with it and I will wait to see what Palmetto has to say about the original issue.
http://img401.imageshack.us/img401/1081/dsc00044yv.jpg No proof mark http://img19.imageshack.us/img19/3568/dsc00053ac.jpg http://img267.imageshack.us/img267/1388/dsc00056ae.jpg |
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quoted from a PSA post in another thread....
"One of our manufacturers does not mark their barrels as to their production processes, but they do lead lap their bores for accuracy. They make a fine barrel, and we have no problem offering a lifetime warranty. If you are unsatisfied with your purchase, please email CS in the morning and we will swap it out for a barrel from a different manufacturer that has marks." basically regardless of marks you either trust a company or you dont. i, personally, trust PSA regardless of markings. |
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Quoted:
I purchased a carbine rifle kit a while back and finally had time to shoot it and noticed that it was putting two gouges in the neck of every spent case. http://img402.imageshack.us/img402/8718/dsc00002er.jpg I sent an email to customer service and they mentioned it could be a bad extractor, but that doesn't make sense to me because the rifle doesn't have any problem extracting the cases and it is happening at the top of the case. There looks like there are two little burrs in the chamber that is putting these two gouges in the cases. I have cleaned the rifle several times and the problem still exists. It might be hard to see in the picture, but it digs into the case and shaves a little brass off. I haven't received an email back from their initial response on Monday so I thought I would post it on the forum so others could chime in. I figure they might be a little swamped from last weekend. I am also having trouble with the accuracy of the rifle. I'm getting over 4" groupings at 25 yards. It even has trouble hitting a water bottle at that distance. I have the handguard rested on a solid surface and the gun is steady when I am shotting it. I hold my breath and have a two stage Geiselle trigger installed. I am using XM855, but I think it would get better groupings then what I am getting at such a short distance. I don't have trouble getting good groupings with other rifles, so I don't know what is going on. Could there be something wrong with the barrel? Thanks for the help. Edit: Here is a link to the rifle kit that I had ordered back in February http://palmettostatearmory.com/index.php/ar-15-05/rifle-kits/16-m4-cmv-chrome-lined-premium-rifle-kit.html. Contact PSA they should take care of it. On the bold part, don't hold your breath when you shoot. |
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Quoted:
Quoted:
I purchased a carbine rifle kit a while back and finally had time to shoot it and noticed that it was putting two gouges in the neck of every spent case. http://img402.imageshack.us/img402/8718/dsc00002er.jpg I sent an email to customer service and they mentioned it could be a bad extractor, but that doesn't make sense to me because the rifle doesn't have any problem extracting the cases and it is happening at the top of the case. There looks like there are two little burrs in the chamber that is putting these two gouges in the cases. I have cleaned the rifle several times and the problem still exists. It might be hard to see in the picture, but it digs into the case and shaves a little brass off. I haven't received an email back from their initial response on Monday so I thought I would post it on the forum so others could chime in. I figure they might be a little swamped from last weekend. I am also having trouble with the accuracy of the rifle. I'm getting over 4" groupings at 25 yards. It even has trouble hitting a water bottle at that distance. I have the handguard rested on a solid surface and the gun is steady when I am shotting it. I hold my breath and have a two stage Geiselle trigger installed. I am using XM855, but I think it would get better groupings then what I am getting at such a short distance. I don't have trouble getting good groupings with other rifles, so I don't know what is going on. Could there be something wrong with the barrel? Thanks for the help. Edit: Here is a link to the rifle kit that I had ordered back in February http://palmettostatearmory.com/index.php/ar-15-05/rifle-kits/16-m4-cmv-chrome-lined-premium-rifle-kit.html. Contact PSA they should take care of it. On the bold part, don't hold your breath when you shoot. Exhale and use the natural pauses in your breathing cycle. |
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re: OP linked images
are the marks not from the case contacting the lugs in the barrel extension? the extractor holds the fired round against the bolt face, but the ejector will start to pivot the case in the bolt as soon as it leaves the chamber. the case on its rotation will tap the lugs, causing the 'ding' or mark. Does your extractor have the O-ring? Try removing the O-ring and use the furnished spring with black insert only... may not make a bit of difference, but something. |
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I purchased a carbine rifle kit a while back and finally had time to shoot it and noticed that it was putting two gouges in the neck of every spent case. http://img402.imageshack.us/img402/8718/dsc00002er.jpg I sent an email to customer service and they mentioned it could be a bad extractor, but that doesn't make sense to me because the rifle doesn't have any problem extracting the cases and it is happening at the top of the case. There looks like there are two little burrs in the chamber that is putting these two gouges in the cases. I have cleaned the rifle several times and the problem still exists. It might be hard to see in the picture, but it digs into the case and shaves a little brass off. I haven't received an email back from their initial response on Monday so I thought I would post it on the forum so others could chime in. I figure they might be a little swamped from last weekend. I am also having trouble with the accuracy of the rifle. I'm getting over 4" groupings at 25 yards. It even has trouble hitting a water bottle at that distance. I have the handguard rested on a solid surface and the gun is steady when I am shotting it. I hold my breath and have a two stage Geiselle trigger installed. I am using XM855, but I think it would get better groupings then what I am getting at such a short distance. I don't have trouble getting good groupings with other rifles, so I don't know what is going on. Could there be something wrong with the barrel? Thanks for the help. Edit: Here is a link to the rifle kit that I had ordered back in February http://palmettostatearmory.com/index.php/ar-15-05/rifle-kits/16-m4-cmv-chrome-lined-premium-rifle-kit.html. Contact PSA they should take care of it. On the bold part, don't hold your breath when you shoot. Exhale and use the natural pauses in your breathing cycle. Thanks for the tip. I wouldn't hold it for too long, just enough to make sure that the sight picture wouldn't move. |
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Quoted:
re: OP linked images are the marks not from the case contacting the lugs in the barrel extension? the extractor holds the fired round against the bolt face, but the ejector will start to pivot the case in the bolt as soon as it leaves the chamber. the case on its rotation will tap the lugs, causing the 'ding' or mark. Does your extractor have the O-ring? Try removing the O-ring and use the furnished spring with black insert only... may not make a bit of difference, but something. I hadn't thought of that and that makes sense why they would suggest the extractor. I tried to remove the o-ring and it was still putting scratches in the case, but it does look like it could be hitting the lugs. So that might explain the marks, but the accuracy still is an issue. I'm sure Palmetto will chime in on Monday and make it right. |
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IM your order number, or contact CS at [email protected]. Your upper has a lifetime warranty on materials and workmanship, if there is a problem, we will take care of it for you.
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IM your order number, or contact CS at [email protected]. Your upper has a lifetime warranty on materials and workmanship, if there is a problem, we will take care of it for you. IM sent. |