Hello all , my friend from work brought a sure shot .22 . While we were plinking around I noticed the fired brass was bulged on the head stamp . The flat spot were the stamp is is rounded . After we noticed that we also noticed the bolt moves forward enough to make space between the bolt handle and the reciever, even when a round is in the chamber . My first instinct is to think it's worn out , but maybe there all like that ? What do you all think?