SH
What 123gn bullet are you talking about - I was not aware Hornady has a 123FMJ. Were you shooting the scenars at the time? What was your OAL?
As for the extensions lugs, they are more meaty than the bolt so would not be too concerned they have been hammered. It's not like you can just screw this one off and screw another on without all the gear and being concerned about headspace. I would check them out carefully to make sure there are no chips off the corners and carry on.
Early thoughts would be the bullet was not held with enough friction and slipped forward on being loaded into the lands. Or the case was too thick at the neck and did not have enough clearance to release the bullet. What is the OD at the neck with a loaded bullet and those cases? What is the diameter of a fired case?
What 123gn bullet are you talking about - I was not aware Hornady has a 123FMJ. Were you shooting the scenars at the time? What was your OAL?
As for the extensions lugs, they are more meaty than the bolt so would not be too concerned they have been hammered. It's not like you can just screw this one off and screw another on without all the gear and being concerned about headspace. I would check them out carefully to make sure there are no chips off the corners and carry on.
Early thoughts would be the bullet was not held with enough friction and slipped forward on being loaded into the lands. Or the case was too thick at the neck and did not have enough clearance to release the bullet. What is the OD at the neck with a loaded bullet and those cases? What is the diameter of a fired case?