Thread: AR issue
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Old October 6, 2013, 08:39 AM   #12
steve4102
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Join Date: December 23, 2005
Location: Minnesota
Posts: 2,949
After you get it open and the live round out of the chamber, go back to square one to determine the problem.

Take some fired brass and size them. Check to see if this sized brass(no bullet) chambers and extracts with ease. If so, then your issue will most likely be with the seating die. If not, screw the sizing die into the press a little at a time until they do chamber. You should have your sizing set up to touch the shell holder plus about 1/4 turn more.


Make sure you have the seating die set up correctly.
Back the seating die way way out of the press.
Place a sized case in the shell holder.
Screw the seating die into the press until you feel it make contact with the sized case.
Back the seating die out of the press at least one full turn and lock it down.

Good luck!

No, you cannot seat a bullet long enough to contact the lands in an AR chamber and still have the round fit the Mag. To long OAL is not your problem.
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