Reloaded ammo and remanufactured ammo should be 2 different things. However, people call their stuff what they want and often call reloaded ammo remanufactured ammo. Sounds better.
As far as the loading in a garage goes, I have seen people selling boxed, labelled and branded ammo, and yes it said reman, that I know for a fact was loaded on 3 550's in a garage.
Especially when there is an ammo shortage, be careful what you buy. And as far as using the pistol for defense goes, I would stick to factory ammo for 2 reasons.
1. Better quality control.
2. Defense in court. Don't let the DA railroad you on a good shoot because you "Crawled into your basement and loaded your own, devastating ammo because the factory stuff wasn't deadly enough!"
Reload/Reman is fine for practice, but use the real stuff if you have to use it for real.