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Old May 11, 2017, 11:26 AM   #2
L-2
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Join Date: September 8, 2004
Location: Nevada
Posts: 523
I don't know about this specific ammo and your specific 11-87, but do ensure the barrel's gas port holes are clear. You can use a drill bit or even just a bent paper clip to keep the holes clean/clear.

When the holes get obstructed, there would be less gas pressure to cycle the bolt.
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