223. fc brass and lee shellhoder?

[RW]

I recently bought some 223 once fired brass and on priming with a lee auto primer I had some that wouln't fit in the shell holder but would fit in a rcbs shell holder just fine I did not try to chamber them in my ar and I am not complaining about the purchased brass was just wondering if that is something that other people has experienced before? Thank You RW

 

[retired]

look for mis shaped rims
rapid extraction from an ar or such

 

[jpx2rk]

Might be a slight burr on the rim, or a slight twist. Pretty common issue for me at times.