I have an 8mm (7.92mm) bolt action rifle that won't feed properly, when you sent the first round into the chamber, the second round will get hung up underneath it and stop it cold. Also, when you manage to get a round in, occasionally when you lift the bolt and pull it rearward to extract the empty, the bolt will come back without the case in it. and then you have to snap the bolt back home and try again. The second time, it always extracts normally. Any help would be appreciated.