MIC usage???

[Norcalkid]

[ar15barrels]

If your fired cases measure +0.003", adjust your dies so that your sized cases measure 0 or maybe +0.001" and you will see better case life.
If you are sizing the, to -0.003" now, that's a 0.006" bump.
I would expect to see case head separations around the 3rd pr 4th firing if you keep doing that much sizing.

With only a 0.002" bump, I would expect 8-12 reloads before necks split or primer pockets stop holding primers...

[freonr22]

Did u need to trim after resizing?

[Norcalkid]

Did u need to trim after resizing?

no.

[Norcalkid]

If your fired cases measure +0.003", adjust your dies so that your sized cases measure 0 or maybe +0.001" and you will see better case life.
If you are sizing the, to -0.003" now, that's a 0.006" bump.
I would expect to see case head separations around the 3rd pr 4th firing if you keep doing that much sizing.

With only a 0.002" bump, I would expect 8-12 reloads before necks split or primer pockets stop holding primers...

Exactly the info I was looking for, thanks