Hi, I am having an issue with 5.56 lake city reloads that I am reoading to .223 specs for my new remington 700 ADL .223. I cannot get the rounds to chamber even after full length resize and trim. Is it possible for my chamber to just be too tight? Factory loaded .223 and 5.56 will fit fine. I do not shoot 5.56, I just want to use the brass for reloads because of the amount I have. Keep in mind that these are brand new resize dies and a brand new gun. Thanks for any help you could give