gldfvr Posted April 5, 2015 Report Share Posted April 5, 2015 So here is my issue. I have just purchased a Bush Master BR-308. I have put 200 rounds through it to date. Have not had many issues but one. At times the rounds dose not fully exit and stays in the receiver as the bolt carrier try's to load a new round and jams. I am shooting brass ammo 145gr. when its dose extract the round it comes out with enough force to dent the case on the forward asset. The last time it had the extract and feed issue I pulled the gun down to see what would be causing the issue. I noticed that the milling on the carrier and bolt was vary rough and was " filing " the top of the case when the carrier was in operation. I polished the carrier with a 800 grit ceramic stone to a mirror finish on all rough milling. I have not yet shot it. before I do is there anything else I should be looking at before I put it all back together. Quote Link to comment Share on other sites More sharing options...
98Z5V Posted April 5, 2015 Report Share Posted April 5, 2015 Pics, man. Need pics. Quote Link to comment Share on other sites More sharing options...
survivalshop Posted April 5, 2015 Report Share Posted April 5, 2015 Sounds like it could be an Ejector or extractor problem . Disassemble the Bolt & clean & inspect . Make sure they function properly & smoothly , check the springs , the Ejector spring can break inside & make it weak. Extractor can have a weak spring or hang up . You could have other things that can cause this problem , the ammo may be one , but just make sure the Bolt components are operating properly . The dents mean nothing , brass was never meant to be used again , but the reloader in me says different . Quote Link to comment Share on other sites More sharing options...
Magwa Posted April 8, 2015 Report Share Posted April 8, 2015 LUBE you need a lot of lube for the first 300 or so if it is a bit dry and parts are dragging it could slow the BCG down just enough to cause a double feed.... how wet do you run the rifle? and what lube. Quote Link to comment Share on other sites More sharing options...
gldfvr Posted April 13, 2015 Author Report Share Posted April 13, 2015 Using rem oil at the moment. Today was the fist day of shooting. It is still dubble feeding and not ejecting the spent round. At times it is hanging out loose just chilling on top of the empty magazine. Here is a pic of the typical dubble feed. The spring looks good. The bolt lugs has impact marks where it is hitting on the back side of receiver lugs as well. Quote Link to comment Share on other sites More sharing options...
Robocop1051 Posted April 13, 2015 Report Share Posted April 13, 2015 I can tell from that picture, you're not using enough lube... it should be dripping and splashing everywhere. Quote Link to comment Share on other sites More sharing options...
gldfvr Posted April 13, 2015 Author Report Share Posted April 13, 2015 Copy. I will get out the oil bucket and make it wet next time I go out. She has 300 rounds through it as of today. What break in oil would you suggest. I keep spraying it dowm with rem oil but as you have pointed out it may not have the lub quality needed. Quote Link to comment Share on other sites More sharing options...
washguy Posted April 13, 2015 Report Share Posted April 13, 2015 Gld What kind of ammo other than just 145grain? Could be underpowered :) Wash Quote Link to comment Share on other sites More sharing options...
Rsquared Posted April 17, 2015 Report Share Posted April 17, 2015 Mobil 1. Pour it all over that sum-bitch. Quote Link to comment Share on other sites More sharing options...
washguy Posted April 17, 2015 Report Share Posted April 17, 2015 You can also have a mag problemo....when a mag gets out of tune (mag lips) it can cause bob...(bullet on bullet) the magpuls are plastic and dont do it often....but a metal mag can cause this very easy.... tweaking mag lips is easy if you know what you are doing...and ruin a mag if you dont :) Wash Quote Link to comment Share on other sites More sharing options...
survivalshop Posted April 17, 2015 Report Share Posted April 17, 2015 Does the bolt hold back on after last round fired in Mag. ? Quote Link to comment Share on other sites More sharing options...
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