AR Comp and XBR Velocities 24" Barrel AR

[Bobke]

It’s been very strongly suggested that a far more reasonable max be observed when loading AR Comp, and wanted to document how much case capacity these loads appear to consume. Also wondering how much compression would be required in doing so. Additionally, how consistent could you possibly hold either loaded OAL or distance to lands with the powder column trying to push the bullet back out of the case. And nothing to confirm true pressure, beyond casual review of case condition.
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