My question is...how do I adjust the firing pin on a 300 wsm Kimber 8400. I noticed very small pimer dents in primers and had 2 of 10 missfire last time I went to the range. My guess is I have to loossen a set screw near the back bottom of bolt??? and then turn the slotted screw on the back end of the bolt one way or the other. Is this correct and if so please explain so I can verify. thanks For any directions given.

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Is the Black circle the set screw to loosen first???

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Then I turn this "slotted" screw one way or the other slightly (if so, how far)

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I'm assuming the screw down by the locking lugs has nothing to do with adjusting the firing pin...see below

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