I just received this rifle used form another member here. It has had little use as I was told and is in excellent shape. I have fired 40 rounds out of it today and about every third or fourth round does not go off. If I take the round out it has a noticeable mark from the firing pin and when I put it back in it always fires. If I just twist the bolt to re-#### the firing pin and pull the trigger it will always fire as well. Any idea what may be causing this and/or how I go about fixing it? The bolt had lots of oil on it which I cleaned all of but it made no difference. I only had one ammunition brand to try but have to get some more anyway.


















































