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9/19/2005 7:02:14 AM EDT
Just shot my Bushmaster .308 for breakin.  Only had one problem.  After shooting 10 rounds loaded one at a time, the bolt failed to remain open on an empty mag.  The rounds cycled perfectly, just the bolt wouldn't lock back on an empty mag.  Any ideas?  
9/19/2005 7:16:12 AM EDT
[#1]
Not had this problem on my Bushy .308 but did have some feeding problems with a weak mag spring and worn out follower, how old and worn out is the mag?

Try changing out mags and see if it is the mags or the rifle.
9/19/2005 8:57:31 AM EDT
[#2]
I have three new Bushmaster 20 round magazines, and I used them all.  Failure to lock back bolt  on empty mag happened with all three.  I was shooting Federal Gold Match 168 grain.
9/19/2005 2:30:02 PM EDT
[#3]
well, I don't own a Bushy .308, but you can get this kind of problem with any manufacturer.  It sounds like:  
1)  followers need to be broken in--try pushing them all the way down repeatedly with a ruler, 20 or so times each.

2)  bolt catch is a little stiff.  Manipulate the catch a bunch while you're watching TV and ensure it's lubed.

3)  the bolt carrier/bolt/recoil spring might need to be worked in a bit.  Make sure it's lubed and go shoot.  You'll likely see your problems go away within a hundred rounds.

9/19/2005 3:12:13 PM EDT
[#4]
make sure your gas block is tightened securely to the barrel.  I have a bushy .308 and the gas block came loose and the bolt would not lock back.  It also failed to eject/feed after it warmed up (20-40 rounds).  

After taking the handguards off I saw that the gas block had been moving ever so slightly.  I tightened it down and solved the problem.

I was just about ready to send it back also.
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