I have a 12 fv that was in 204 ruger. I bought a 22-250 bbl and bolt face. Headspaced and the bolt closes fine. I have a dummy round, oal is correct, it will not feed off the mag into the chamber. Do I need to change the mag or am I missing something else? If I seat the round on the bolt face in the extractor and close it all is well. Did I reassemble something wrong with the bolt??? Can't figure it out.

Thanks!