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AR15barrels · February 6, 2013, 10:07 PM

3 of those cases look like they have pull marks.
If so, that is a sign of too much gas.

Read this:
www.ar15barrels.com/prod/operation.shtml

Then look at the cases from the other side and see if there are pull marks on the rims.

Also, how many firings are those cases?

February 6, 2013, 10:07 PM	#25
AR15barrels Member Join Date: August 23, 2006 Location: Los Angeles, CA Posts: 53	3 of those cases look like they have pull marks. If so, that is a sign of too much gas. Read this: www.ar15barrels.com/prod/operation.shtml Then look at the cases from the other side and see if there are pull marks on the rims. Also, how many firings are those cases?