I am trying to install my new McGowan barrel and it will not thread into the receiver, the first one or two threads will grab then it stops like it is cross threading.

I tried 5 other barrels that I have including Savage, McGowan and Apache. The only barrels that will fit the action are the original barrel and another McGowan that I have. I tried the barrel nut and it wont fit the other Savage, Apache and McGowan barrels either.

The action and barrels are all small shank, Anyone else ever run into this?