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Old March 31, 2006, 11:24 PM   #2
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Join Date: October 15, 2004
Posts: 934
It's not normal. You are not being a ninny. I don't know much more that. You have a problem, but beginning case head separations don't show up on the outside of the case.

Find a gunsmith with the optical tool to examine the inside of your chamber under magnification. My guess is that the inside of your chamber was scored by a chip stuck on the reamer. The brass would be forced into the groove by the pressure of firing and then wiped off when the case is extracted. A bore scope should find that groove if it's there. I can think of nothing else that would give the symptoms you describe on a regular basis. The cases that do not show the mark would be those in which the pressure was slightly lower. I would expect it to show up every time on near max loads in slightly tarnished cases.

I dunno nothing about Sako's warranty policy, but, if I am correct, it's a factory defect and they should replace the barrel.
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