Flavo Posted October 12, 2016 Report Share Posted October 12, 2016 Hey guys this is my first post, but I have been having some problems troubleshooting my 308 build, so hopefully you guys can help. i have an SSA upper with a brownells BCG and a Red X arms 308 barrel **GASP** I know most people think red x is garbage, but it's the barrel I got. So the problems I have been having is when I use 308 ammo (as opposed to 7.62x51) in which the round is not feeding properly. It seems as though the bullet gets stuck halfway into the chamber when the BCG tries to feed the round. This happens every 2 or 3 rounds shot. I tried multiple different types of ammo including Remington Core Lokt, PMC Bronze, and Perfecta, all same problem. However, when I tried American eagle 7.62x51, I went trough the entire 20 round box without issue. The 308 rounds eject forward of 90 degrees and have scrape marks on the casing (in the shape of a 1cm by 0.5cm rectangle, more or less) while the 7.62 was ejecting behind 90 degrees. One round mag test is successful. When I try manually cycling the bolt, it seems to have the feeding issue also, so that makes me think it is the barrel since I eliminated the possibility of it being gas related. if you need any more info, or need pictures please let me know. I appreciate any input. Thanks! Quote Link to comment Share on other sites More sharing options...
Armed Eye Doc Posted October 13, 2016 Report Share Posted October 13, 2016 Welcome to the forum. Someone should be along shortly to help. Quote Link to comment Share on other sites More sharing options...
shepp Posted October 13, 2016 Report Share Posted October 13, 2016 Welcome, feel free to post in the intro section!! going out on a limb here. Is your barrel stamped .308 or 7.62x51 Quote Link to comment Share on other sites More sharing options...
Flavo Posted October 13, 2016 Author Report Share Posted October 13, 2016 The barrel is stamped 308 Quote Link to comment Share on other sites More sharing options...
jtallen83 Posted October 13, 2016 Report Share Posted October 13, 2016 How many rounds through the rifle? Are you running it real wet, like dripping oil? I would suggest trying some FGMM ammo, I know the Perfecta and the PMC Bronze are notoriously underpowered. Quote Link to comment Share on other sites More sharing options...
Flavo Posted October 13, 2016 Author Report Share Posted October 13, 2016 Not a ton, maybe 200 rounds. And yes I run it very wet. And alright I will try that thanks! Quote Link to comment Share on other sites More sharing options...
survivalshop Posted October 13, 2016 Report Share Posted October 13, 2016 Is this issue with the same Magazine & what brand is the Magazine ? Quote Link to comment Share on other sites More sharing options...
Flavo Posted October 13, 2016 Author Report Share Posted October 13, 2016 Yes same magazine for all tests. Pmag 10/20 (I am in NY) Quote Link to comment Share on other sites More sharing options...
survivalshop Posted October 13, 2016 Report Share Posted October 13, 2016 Is it a Gen 3 or an early LR PMag ? It will read Gen 3 on the mag if it's one . Quote Link to comment Share on other sites More sharing options...
Flavo Posted October 16, 2016 Author Report Share Posted October 16, 2016 It is Gen 3. Does it matter that the mag is for 7.62x51? I don't know if they have separate Mags for 7.62 and 308 Quote Link to comment Share on other sites More sharing options...
mrmackc Posted October 16, 2016 Report Share Posted October 16, 2016 No, in fact that mag will probably work for .243 Win. Quote Link to comment Share on other sites More sharing options...
survivalshop Posted October 16, 2016 Report Share Posted October 16, 2016 6 hours ago, Flavo said: It is Gen 3. Does it matter that the mag is for 7.62x51? I don't know if they have separate Mags for 7.62 and 308 Try to find a DPMS mag. or try to find a early LR 308 PMag , some have had issues with the Gen 3 with the Bolt stop , because the Mag's Follower isn't going high enough to engage the Bolt Stop , who knows what other issues it could cause in some 308AR's . Its worth a try to use different Mags . , also might want to inspect the feed ramp , make sure there is a smooth transition for the Cartridge to feed with out it being bumped up out of the normal feed path . Since the Ball ammo is feeding , the feed ramps would be a good place to look . One thing at a time, try a different Mag first , in my measurements of different mags ,the DPMS & Lancer L7's set the cartridge the highest in the the mag well & a little higher of an angle , may be all that is needed for the rifle to feed reliably . Quote Link to comment Share on other sites More sharing options...
Flavo Posted October 17, 2016 Author Report Share Posted October 17, 2016 Is it normal for these Mags to cost between 30 and 50 dollars? Because that is the range I am seeing after searching for DPMS mags Quote Link to comment Share on other sites More sharing options...
Flavo Posted October 17, 2016 Author Report Share Posted October 17, 2016 By the way I need 10 round mags so that raises the price automatically Quote Link to comment Share on other sites More sharing options...
washguy Posted October 17, 2016 Report Share Posted October 17, 2016 Flavo get you a lancer mag or two...then you will know the mag isnt the problem ! But you have answered your own question in your post On 10/12/2016 at 1:43 PM, Flavo said: a Red X arms 308 barrel **GASP** I know most people think red x is garbage, but it's the barrel I got. On 10/12/2016 at 1:43 PM, Flavo said: so that makes me think it is the barrel since I eliminated the possibility of it being gas related. after reading reviews of your barrel I tend to agree with you Wash Quote Link to comment Share on other sites More sharing options...
survivalshop Posted October 18, 2016 Report Share Posted October 18, 2016 The American Eagle 7.62x51 ball is working in the Barrel , so that leaves two things , Magazine ( which is 90% of feeding issues on most weapons ) & the feed ramp , which may not like the Bullet configuration of the commercial ammo . Yes you will pay big $$ for a Lancer L7 , but its a good choice , there has been several issues with the latest PMag , I had to send two brand new Gen. 3 ones back , because they had issues with fitment & were causing feeding issues . They were some of the first off the new assembly plant & the replacements sent to me work fine . Quote Link to comment Share on other sites More sharing options...
Flavo Posted October 19, 2016 Author Report Share Posted October 19, 2016 (edited) From the research I've done, it seems as though 308 is hotter than 7.62, which was supported by the 1-2 o'clock ejection of 308 and 7 o'clock ejection of 7.62.........is it possible that the 308 round is running the action too fast which is causing FTFs? If that's the case an adjustable gas block would be the cure. Edited October 19, 2016 by Flavo Quote Link to comment Share on other sites More sharing options...
Matt.Cross Posted October 19, 2016 Report Share Posted October 19, 2016 3 hours ago, Flavo said: From the research I've done, it seems as though 308 is hotter than 7.62, which was supported by the 1-2 o'clock ejection of 308 and 7 o'clock ejection of 7.62.........is it possible that the 308 round is running the action too fast which is causing FTFs? If that's the case an adjustable gas block would be the cure. A heavier buffer would also be a good option in the event that it's cycling too quickly. Quote Link to comment Share on other sites More sharing options...
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