I was at the range today and decided i had not wanted to fire off my last round, so i took my mag out of the rifle and tried pulling the bolt carrier back and it felt like it was wedged shut, i shot the round off and it functioned great. I put the mag back in and charged the rifle again and same thing.... So i shot it off and put a bullet directly in the chamber and let the bolt slam closed and still the gun couldnt be racked by hand (well it could but not without exessive force) None of my other rifles do this so i was wondering if my gun was/is messed up or if something is a little bit off..