Range report: Fired Ultramax 168gr LC brass remanufactured, and HSM 168gr Federal brass ammunition in my 10FP. Neither would rechamber after I fired them. I marked the case with magic marker to rechamber the fire formed case in the same position. No go. Looks like I'll have to FL resize my fire formed 308 cases. My 12FCV is tight as well. I've started FL sizing the LC, Rem, and Win brass for the .223 last year. I have successfully neck sized fireformed 223 cases for my Mod11. The cases will rechamber in the Mod11 with no problem. I would like to be able to neck size the 308 brass to extend case life. If I can't, I can't. Thanks for the feedback from all posters. This has been a great learning experience.