I shipped a nice little rifle the other day. The new owner cleaned the bolt inside, it was dirty. He was able to c o c k it and dry fire once, now it won't stay c o c k e d. Any tricks to try, what to look for? Thanks in advance.
Yup, maybe the sear spring didn't stay in its cup or is broken.^^^^^
Check the trigger mechanism. Make sure the sear is rising freely into the upmost position.