I have a .22 rifle barrel for my contender. For some reason it will now occasionally fire when closing the action. The hammer is not back and my finger is no where near the trigger. In fact the hammer still will cock (like it has never fired). There is a VERY feighnt impression on the the shell casing. At first glance it would be easy to miss. I am using Federal Gold Metal ammo if it matters. What is my problem?
Tipiguy