Carbonyl, please read the previous ten or so posts.
From the OP's picture of the box of ammo he was using, there are signs of at least one or two reloaded cartridges, plus a mix of headstamps.
In other words, this was NOT a box of factory Federal ammo.
NO firearm manufacturer honors warranties if the shooter uses handloads. NO ammo manufacturer would honor a warranty when at least some of the ammo in the box is clearly not their factory ammo.
As I see it, the OP's only recourse is to go after the vendor who sold him the ammo - in which case, he'd better hope he has a receipt.