Welcome aboard, fellas!! Late model NEF/H&R rifles have extractors instead of the older, more appreciated ejector. The extractor is mechanical and very positive, ejectors are spring driven and can fail to eject, leaving the case stuck in the chamber, but with a little chamber polishing and keeping the chamber clean and tuned, they work very well.
Failures to fire(FTF) can also be attributed to not pulling the trigger fully to the rear at the break, if you release the trigger at the break, the transfer bar can fall away and the hammer will not impact the firing pin good resulting in inaccuracy or even a FTF. Consistent pin strikes are essential to consistent ignition and accuracy, even on sporting ammo. Hard, recessed primers on 7.62x39 milsurp ammo will definately cause FTFs.
Tim