Ejector marks on factory ammo

[Amos Moses]

I’m struggling to figure out why I’m getting ejector marks on the case head from factory ammo.

6.5cm Tikka
Factory barrel cut to 20” with around 240 rounds fired
Hornady 140eldm

I was seeing some big inconsistencies in muzzle velocity between different lots of factory hornady ammo. The last box I was using was at 2515fps. Bought a new case and it’s averaging 2587. Bolt lifts are slightly heavier with this lot, and markings. None of the other spent rounds have any marks on the case head.

Does this look like pressure issues that I should be concerned with? I don’t reload, so not well informed with this type of thing.

They shoot great so no accuracy issues.

 

[WeiserBucks]

They shoot great so no accuracy issues.

Go about your business and throw away the brass.

 

[pods8 (Rugged Stitching)]

Soft brass and full pressure load.

 

[TaperPin]

Normal.

 

[49ereric]

Tight chamber perhaps

 

[Amos Moses]

Tight chamber perhaps

I thought of that as a possibility, but the other 220+ that were shot in this rifle didn’t have any marks. All factory 140eldm too.

I’ve read/watched a video on hornady using different powders in different lots so hopefully this is just a result of that.

 

[49ereric]

I thought of that as a possibility, but the other 220+ that were shot in this rifle didn’t have any marks. All factory 140eldm too.

I’ve read/watched a video on hornady using different powders in different lots so hopefully this is just a result of that.

Call hornady