15/100 misfires from Federal AE

Wondering if this is kind of usual now, I fired 100 rounds of Federal AE 308 150g FMJ-BT. 15 of them were duds. I feel like I may have gotten unlucky because I heard great things about this stuff, but still 15% misfire rate at $1.80/round seems really really bad, and I’m disappointed. Is this usuall or would it probably be fine to buy the same ammo again albeit from a different batch?