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Old January 27, 2013, 10:57 AM   #1
Senior Member
Join Date: May 12, 2010
Location: DFW Texas
Posts: 1,996
Case head marks from AR bolt

Hey guys,

I was shooting my AR yesterday and noticed that the case heads of my brass were getting marked/rubbed (see pic).

The BCG is brand new. The loads I shot were PPU 55gr and some mk262 clones that I handloaded.

I have an adjustable gas system too, so maybe I need to adjust the timing? The ejection was at 3:00-4:00
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