mr fixit Posted December 17, 2008 Report Share Posted December 17, 2008 Like it says. I have a .308 barrel and want to try to make it feed 308 well. Right now it hangs up 3/4 way in. So, am I right that i need to widen the fed rails at the front where they narrow together? How much? Link to comment Share on other sites More sharing options...
bubbamauser Posted December 18, 2008 Report Share Posted December 18, 2008 I use an empty case covered with black marker to see where it is catching and start to open it up there with a file, checking often with the case covered in marker , but remember they call me bubba Roy Link to comment Share on other sites More sharing options...
ken98k Posted December 18, 2008 Report Share Posted December 18, 2008 I recently had the same problem and I remedied it by slightly opening up the extractor claw. Feeds and extracts very well now, with no permanent changes to the receiver. Kenny Link to comment Share on other sites More sharing options...
Clemson Posted December 18, 2008 Report Share Posted December 18, 2008 Yeah, the extractor is the place to start. You only need about 25% of the extractor for reliable function. Begin by grinding off a small portion of the lower corner of the extractor and reshaping it. I have had to remove all of that corner to get a .308 to feed. Some others require just a little and some nothing at all. If that is not enough, work on the follower. The easiest fix is to replace it with a short action follower. Occasionally Numrich will have those followers, or you can buy a Remington follower. The rails are the last place to work, and you probably won't get to them on a .308. A magnum conversion will get you into the rails. Clemson Link to comment Share on other sites More sharing options...
brokengun Posted December 18, 2008 Report Share Posted December 18, 2008 1st For your feeding test are you using a casing or a complete round. I found that using a casing doesn’t always work and sometimes hangs up midway. I made up a dummy test round for working out feeding problems. 2nd I’ve also found that a weak magazine spring can cause midway feeding problems, so can a rough follower. 3rd Before opening up the feeding rails polish them and remove any burs. The very nose of the feeding rails has a half-hour glass shape if the 2 dipple areas are rough they will cause binding. But what ever you do DON’T file them out because there needed for alignment. There’s a book by Raymond Benwood called “A guide to the drilling, reaming and broaching a bolt action receiver at home” available for free at JPFO.org http://www.jpfo.org/filegen-a-m/boltaction.htm In this book is a set of templates for making a gauge for the correct sizing of the feeding rails for a Mauser. Link to comment Share on other sites More sharing options...
bubbamauser Posted December 19, 2008 Report Share Posted December 19, 2008 Clemson is right the only time I had to do this was for a 300 win. I have polished up rails and the feed ramp for '06 6.5 and 243 but didn't need to open them up to feed. I should have paid more attention to your caliber. Roy Link to comment Share on other sites More sharing options...
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