I hope you guys can help me out. I recently got a new 9mm Luger pistol calibre carbine (JR Carbine 18.6" barrel). Loaded up the first 10 rounds in the rifle using factory Remington UMC 9mm Luger 115gr FMJ ammo. All fired and ejected well. I went to check the spent ejected cases for any odd signs. Note: I hand load 308 and 6.5CR and have had my fair share of light loads and over pressured loads; But I have never encountered this. Anyone know what this might be? I'm thinking bolt/firing pin issue ... (The dealer hasnt been too quick in responding) your thoughts?

