|
As stated above and in the provided link, your brass life is coming to an end.
None of this explains the "slam-fire" however. If I were you I would be more concerned with this than the brass. How are you crimping? With the seating die or a separate die like the Lee Factory Crimp die?
Over crimping with the seating die may cause the case to buckle and cause chambering issues. Is all your brass trimmed to the exact same length? If not this could cause inconsistencies in your crimp and maybe a buckled case.
If you are going to crimp, get a Lee Factory Crimp die.
|