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Posted: 11/24/2009 2:15:25 PM EDT
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All doublestar except for the barrel, a chromed BM 1/7. Basically for most brass it feeds okay, had some double feeds, but majority ran fine. On steel it would fire the round, and sometimes eject and sometimes not eject the shell. It also wouldn't feed the next steel round in (That might have been on the instances when it didn't extract the fired casing). Maybe just needs a thorough break-in period?  |
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BM chambers there barrels tighter in the cross wall section, and it will take at least 1K of live brass rounds fired through the rig to break the barrel into the point that it will digest Coated ammo.
Not sure why you went a BM barrel over a J&T (who owns Double star) thought, since J&T/Double star barrels will run with coated ammo without problems from the start (have a couple of thier barrels that I'm running on rigs). |
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Quoted: BM chambers there barrels tighter in the cross wall section, and it will take at least 1K of live brass rounds fired through the rig to break the barrel into the point that it will digest Coated ammo. Not sure why you went a BM barrel over a J&T (who owns Double star) thought, since J&T/Double star barrels will run with coated ammo without problems from the start (have a couple of thier barrels that I'm running on rigs). Thanks. Was just the luck of the draw when finding parts for this build. The barrel is more or less new or rarely fired from what I could see, bought it off the EE, everything else is brand new doublestar. I have another all DS build with a 14.5+phantom BM barrel and from the get-go it would digest anything and I mean anything. It's my primary so I'm not really worried about this build. |
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I have no issue with Bushy barrels, I have used many of them, and steel cased ammo in all of them went just fine (new stuff, never the old green cased Wolf stuff)
I had a mystery barrel that didn't like Wolf (or much of anything else, for that matter) and I bought Ned Christiansen's chamber reamer to clean it up. Worked just fine.. Link for the tool I bought 5.56 Reamer |
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Just checked the site listed, and all the show is a neck and throat reamer (not a chamber reamer).
If chamber cross wall dimensions are tight, then the above will not solve the problem. Plus, not a big fan of elongating a throat anyways, since the increase jump to land just degrades accuracy (same as throat erosion). |
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