It depends on how much powder is used, the OAL, etc. It also depends on the gun it'll be shot out of. Is the gun a shorty or a full-length gun? Does it have poppleholes or not?
You might get lucky and the ammo from Atlanta might make major in your gun. However, it might also run too much pressure and you might end up beating up the frame on your gun. It might also work the comp too much or too little. It might also be accurate, it might not. The OAL might be too short, it might be too long.
Like someone mentioned above, there really isn't a way to get around not reloading unless you can determine a good load for your gun either through experimentation or the manufacturer's/smith's load recommendation, and you find a local bud or commercial reloader that will load to those specs.
...Well I suspected (and been told by more experieced shooters) that I would not be able to get around the reload, unless I went with an Open "Glock" type gun while I gain experience if I wanted to shoot factory ammo. But, if I want a good, well fitted, reliable Open class STI type gun, that I must reload.
So reload is on my radar...(I've thinking of doing it for some years now)...dillon 650 here I come...thanks for the Advice.