When I talked to Speer about their "reclassified" ammo, the tech support person I talked to said it's basically a lot of ammo that has failed to meet the specific velocity requirements of a contract.
IOW, the 124gr +P ammo may have chronographed at 1200 fps rather than the 1250 fps, so they sell it to dealers.
There is nothing wrong with the ammo, and there is certainly no reason not to carry it as self-defense ammo.
I bought a bunch from Milwall a year or so ago when they had it for about $7/box of 50 and all of it I've shot has been flawless.
Regards,
James