05titanle Posted March 1, 2016 Report Share Posted March 1, 2016 This going to be hard to explain. I guess you would call it a failure to feed problem. The bolt will start the case out of the mag then the bolt will not feed stright into the bore. The bolt will ride over top the case and jam it at a 45 degree angle. Need Help Quote Link to comment Share on other sites More sharing options...
blue109 Posted March 1, 2016 Report Share Posted March 1, 2016 Need all the specifics. Factory or home build gun? New or used? Specs? What mags? Ammo? Is this the first time firing it? Quote Link to comment Share on other sites More sharing options...
shepp Posted March 1, 2016 Report Share Posted March 1, 2016 This going to be hard to explain. I guess you would call it a failure to feed problem. The bolt will start the case out of the mag then the bolt will not feed stright into the bore. The bolt will ride over top the case and jam it at a 45 degree angle. Need Helpwelcome to the forum from southern wi what blue said details plz Quote Link to comment Share on other sites More sharing options...
05titanle Posted March 1, 2016 Author Report Share Posted March 1, 2016 Home build 147 FMJ. New gun Magpul 20 round mag. First 10 rounds ran fine. 16" mid length DPMS upper and lower. Carbine buffer 11.25" spring and 3.80oz buffer. Ares Armour NIC bolt. Quote Link to comment Share on other sites More sharing options...
shepp Posted March 1, 2016 Report Share Posted March 1, 2016 Home build 147 FMJ. New gun Magpul 20 round mag. First 10 rounds ran fine. 16" mid length DPMS upper and lower. Carbine buffer 11.25" spring and 3.80oz buffer. Ares Armour NIC bolt. she lubed up good? Quote Link to comment Share on other sites More sharing options...
jtallen83 Posted March 1, 2016 Report Share Posted March 1, 2016 Does it jam on every shot after that first ten each time you load the mag? How many rounds through the rifle? Are you using enough lube to make it drip out the mag well? You should break it in dripping wet with a good lube.Have you tried different mags?Will it lock back on an empty mag when only one round is loaded?Is it possible it is short stroking and picking up the round with the carrier instead of the bolt? Quote Link to comment Share on other sites More sharing options...
Matt.Cross Posted March 1, 2016 Report Share Posted March 1, 2016 Make sure your mag is seating at the top of it's possible travel, your bolt is less likely to slip off the round then. Quote Link to comment Share on other sites More sharing options...
slugger43 Posted March 1, 2016 Report Share Posted March 1, 2016 Had serious feed problems with the Ares Armor NIB BCG. If you have access to and alternative BCG, giving that a quick try might just quickly define the problem. Never found out what exactly was "out of spec", but a change of BCG got mine running perfectly. Quote Link to comment Share on other sites More sharing options...
Dane Armory Posted March 1, 2016 Report Share Posted March 1, 2016 Welcome from AZ! Need a few more specifics , like is it new ? If so ... Rack the BCG About 100 times with some lube on it to mesh the upper to the bcg.When you go out next time take a DPMS metal mag with you and a different kind of ammo ,like 168 Gr projectiles.Wait for it.... Lube it up with Mobil One or Castrol GTX ! Dripping Wet, Running down your arm, Splashing in your face and dripping on the floor !!! This will break in your gun , 50 to 100 rounds . Run a patch through the barrel every 10 to 20 rounds.The 147 gr bullets are not the best to be used for breaking in your gun. Also the buffer is a little heavy. Magazine could be the other issue, try the metal mag with the 168gr bullet then the Pmag with the 168gr bullet.Good luck and tell us what happens. Quote Link to comment Share on other sites More sharing options...
survivalshop Posted March 1, 2016 Report Share Posted March 1, 2016 Home build 147 FMJ. New gun Magpul 20 round mag. First 10 rounds ran fine. 16" mid length DPMS upper and lower. Carbine buffer 11.25" spring and 3.80oz buffer. Ares Armour NIC bolt. As had been said , run her wet . Sounds like its short stroking & as said , the BC is stripping the fresh round from the Mag & not the Bolt face. Test as said , with one round in the Mag to see if the BCG goes back far enough in recoil to lock back BCG on last round . The fact that she ran with the first ten rounds may mean not enough lubrication & the BCG is binding or slowing down on recoil . Check your Gas Block to make sure it hasn't loosened up or moved . How far does your Gas Tube protrude into the Upper Receiver ? Photo's ? How many coils in the Buffer Spring ? Whats the length of the Buffer ? Has the Head Space been checked ? Rifle should function reliably with good 147 gr. Ball Ammo . I use M80 ball to test all 308AR's I have built . Quote Link to comment Share on other sites More sharing options...
392heminut Posted March 1, 2016 Report Share Posted March 1, 2016 05titanle, it sounds like these guys are throwing a lot of questions at you but this is stuff that can really have an effect on the operation of the gun. Bear with them and they WILL help you get to the source of the problem!Welcome from New Mexico! Quote Link to comment Share on other sites More sharing options...
05titanle Posted March 1, 2016 Author Report Share Posted March 1, 2016 (edited) Okay, I will not get time to shoot the gun for awhile. So I CLP the hell out of it. Just manually running the bolt by hand. If the bolt is locked back and I hit the bolt release it will chamber, pull the charging handle back the whole way and let it fly, it will jam every time.... It seems that when the bullet hits the feed ramp it shoots the bullet upwards to much and thats when the bolt will jam about in the middle of the case... I did try a Brownells Metal mag did not make a difference Edited March 1, 2016 by 05titanle Quote Link to comment Share on other sites More sharing options...
05titanle Posted March 2, 2016 Author Report Share Posted March 2, 2016 Ballistic Advantage 16" .308 Barrel, Government Mid-Length is the barrel a have Quote Link to comment Share on other sites More sharing options...
washguy Posted March 2, 2016 Report Share Posted March 2, 2016 (edited) 05.....so do what the brothers have suggested for sure.....my 2cents....you proly have one or two things going on...we have to eliminate the short stroke gas problem first....but you just stated it boogers up on charging.. when you put in the mag release..did you screw the lever down till it almost hits the lower...do the mags rock or feel loose in the magwell? Can you get it to feed by holding the mag a certain way? So off the bolt catch it feeds......But...when you pull back and let fly it fails to feed? Heres what a stock dpms buffer looks like and spring..we gotta start from first base.. also...pull the charging handle back and let the mag catch hold the bolt.. ....then pull on the charging handle and measure to see how much further you can pull the bolt back off the bolt catch? WashOh...the inside length of the buffer tube is 7 inches for the spring and buffer pictured here ....is that the tube you have?...and when you installed the mag release did you take a punch or screwdriver and push the mag button down while spinning on the mag release down to the lower? Is your upper/lower fit nice and tight ? Edited March 2, 2016 by washguy Quote Link to comment Share on other sites More sharing options...
05titanle Posted March 5, 2016 Author Report Share Posted March 5, 2016 Spring is 11.25" buffer is 2.25"and the inside of the tube is 7" Mag release is as tight as i can get it..... Bolt lug is hitting the back of the case to push it forward.. I'm at a lose.. Quote Link to comment Share on other sites More sharing options...
washguy Posted March 5, 2016 Report Share Posted March 5, 2016 (edited) 05 you gotta do this.... pull the charging handle back and let the mag catch hold the bolt.. ....then pull on the charging handle and measure to see how much further you can pull the bolt back off the bolt catch? "Bolt lug is hitting the back of the case to push it forward.. " .. I dont understand what you mean? ive never had a Dpms car buffer at 2.25...all of mine are 2.50 and you said off the bolt catch it feeds fine in your post...right?...pics would be nice Wash Edited March 6, 2016 by washguy Quote Link to comment Share on other sites More sharing options...
survivalshop Posted March 6, 2016 Report Share Posted March 6, 2016 The Buffer measurement is a little short & Can you count the Coils on the Spring ? Check Ejector & Extractor , one or the other ( or both ) could be keeping the Base of the Cartridge from seating into the Bolt Face . Quote Link to comment Share on other sites More sharing options...
05titanle Posted March 6, 2016 Author Report Share Posted March 6, 2016 Washguy, I dont understand what you mean " pull the charging handle back and let the mag catch hold the bolt." do you mean the bolt catch? My buffer is 2.50" not 2.25... I'm coming up with 28 coils. When i pull the charge handle back and lock it with the bolt catch, I can pull the bolt back about 3/16" more... When I said "Bolt lug is hitting the back of the case to push it forward. What i mean is the bolt is pushing the case forward and not the carrier.. Quote Link to comment Share on other sites More sharing options...
washguy Posted March 6, 2016 Report Share Posted March 6, 2016 Im sorry sheesh I mean the bolt catch...duh....well..I just went and looked at 3 of my ar'308's...they all have a dpms car buffer /spring and they all pull back off the bolt catch a good 3/8 of an inch backwards to where it stops in the buttstock....so does it still feed off the release of the bolt catch,but not when you pull the charging handle back?...lets see some pics Wash Quote Link to comment Share on other sites More sharing options...
washguy Posted March 6, 2016 Report Share Posted March 6, 2016 So what happens when you load one shell in the mag and then fire it? try different mags too Wash Quote Link to comment Share on other sites More sharing options...
washguy Posted March 6, 2016 Report Share Posted March 6, 2016 (edited) We need a pic of the bolt held open by the bolt catch with and without a mag...with a cartridge and without one. If you cant even get to the point of feeding when you pull back the charge handle...something is very strange....sounds like your mags are sitting too low in the lower...did you hold the mag in different positions while trying to charge? is the mag tight or loose?...take out your bcg and take it apart...look for shavings...under the extractor too...lets see the spring setup under the extractor...does the bolt/cam move nicely? and you said the first 10 rounds ran okay.......inspect your bcg for shavings and lube it up Wash Edited March 6, 2016 by washguy Quote Link to comment Share on other sites More sharing options...
05titanle Posted March 6, 2016 Author Report Share Posted March 6, 2016 LR10 308 WIN.zip Quote Link to comment Share on other sites More sharing options...
05titanle Posted March 6, 2016 Author Report Share Posted March 6, 2016 Hope this helps.... Thanks so much for helping me out with this.... Quote Link to comment Share on other sites More sharing options...
washguy Posted March 6, 2016 Report Share Posted March 6, 2016 LR10 308 WIN.zipdidnt work for me just upload each pic dont zip Quote Link to comment Share on other sites More sharing options...
05titanle Posted March 6, 2016 Author Report Share Posted March 6, 2016 Can you see the photo's now? Quote Link to comment Share on other sites More sharing options...
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