300 LoudnBoomer, Send it back to NEF (if is it a new one, since the company change). They should replace it for you even if it's more than a year old. To check if it was made by the "new" NEF/H&R1871, just call or e-mail them with the serial number. It might not blow up in your face but I would not shoot it any more!!! If you have any problems please feel free to e-mail me at armartin1(at)comcast.net or PM me and I will do all I can to help you out. Again, please don't shoot it again, especially with the 30-06 barrel. How old is it, did you buy it new? When (what year) did H&R add the new .223 barrel? What is the serial number? (replace the last 3 digits with x's)....<><.... :grin: