Maybe also relax your firei g pin spring between uses too.it helped no end with my 223 when I first got it.had heaps of misfires till learnt to do it. With bolt out turn end so the sear?? Bit slides forward and end of bolt rotates.takes a bit of welly to turn it back again,one of my four I need mechanical assistance,the others turn no drama. The stiff one gets padded vice grips to hold end and turns easy with added leverage. Might help.wont hurt.
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