There is one reason I always keep my ammo boxes and lot #'s, in case of a defective round destroys one of my weapons.
S&W is not obligated to contact Federal, and vise versa, that is the OP's job.
Either way one of the two companies damn well better man up or I will be going straight to an attorney with evidence, and would demand compensation.
Factory ammo doesn't have an expiration date last time I checked. This is in no way the OP's fault.
Also it's very common for the pistol manufacturer and ammo company to point fingers at one another in this situation. Either way someone needs to step up.