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Originally Posted By: Jack RobertsYou are on the right track. You need to measure the shoulder setback. Even for an AR .002 is about perfect. .005 is way too much and will cause head separations in as few as 4 firings.I aim for .001-.002 for a bolt and .0015-.0025 for a self loader.Jack+1, What Jack said.
Originally Posted By: Jack RobertsYou are on the right track. You need to measure the shoulder setback. Even for an AR .002 is about perfect. .005 is way too much and will cause head separations in as few as 4 firings.
I aim for .001-.002 for a bolt and .0015-.0025 for a self loader.
Jack
+1, What Jack said.
