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Old 05-08-2007, 06:07 AM
DittoHead DittoHead is offline
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Join Date: Sep 2006
Location: Central Virginia, U.S.A.
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Quote:
Originally Posted by scootertrash View Post
After decreasing the N120 load, I still experienced not what I'd call hard bolt lift, but difficulty at the top of the bolt lift and the ominous clicking. I had read, perhaps here, that once brass starts the bolt clicking, it will always remain. So, I got new brass and experimented some more. 17.2 grains shoots rather nicely, the bolt opens smoothly, and no clicking. The velocity is just at 3700 in 55° temps, and chrono testing over on the eastern plains a couple weeks ago showed 3732 in 85° temps with no issues.
What is this “clicking” problem?

I think I have seen someone mention it before but I have never read an explanation of the cause. I assume the culprit is pressure, but exactly what part of the bolt or brass is making the clicking sound and why?