HI, I"m new to this forum, so if this question is already answered, please direct me to that thread, thank you.
I just acquired a Krag sporter, not very well done wood, the machinery seems to work OK though.  A friend of mine, Krag owner, said there is a set of these which are not functional, and there is a list of serial numbers where I can verify if my rifle is "un-shootable".  Is this real?  Is there any such a list?  Do I have any reason for concern?  Thanks.