300 WSM Box Ammo?

Ran into this problem this week. Was shooting the Hornady Precision Hunter 200gr ELD-X in 300wsm. About 30% (12/40) of the two boxes of factory ammo resulted in a heavy bolt lift. Swipe marks on the base with ejector plunger hole marks as well. No primer issues.

Huge variation in a new box of cartridges.

SAAMI STD: 1.7260 - 1.7360

Fire formed brass headspace : 1.7350

New cartridge headspace : 1.7305 to 1.7340

Not real impressed.
 
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