Quoted:
Some questions about ammo.

I don't want ammo that is going to dirty up my rifles and suppressors, so if that means no polymer coated rounds, it'd be good to know now.



1.) Is remanufactured ammo bad?


2.) Is loaded in once fired brass bad?

3.) Is fully processed brass bad? (What does it even mean?)

4.) Is polymer coated lead bullet bad?   ( I don't want to find out people saying, "O, it's common knowledge to never shoot polymer coated or coated bullets through a suppressor!" )

Quoted:

1. No, not necessarily. I've shot a few hundred rounds of factory remanufactured ammo. Mostly .223 and 9mm, some .380. All worked so far. Not the greatest accuracy wise, but as long as it's from a reputable manufacturer you should be fine.

2. Same exact thing as question 1. If the ammo is loaded using once fired brass that is remanufactured ammo. It means the brass was fired through a weapon as a full cartridge once. 

3. No. It means what it says, it's processed (like new, basically) brass. Means it's ready to load without doing any work to the brass such as cleaning the primer pocket, tumbling, etc. 

4. I would guess they're ok for suppressor use, but I don't know. Someone else might be along with a more substantial answer though. 

Quoted:

Does 'remanufactured' mean reloaded?

Quoted:

Yes.

Remanufactured is just a term for reloading done on a factory line by a business rather than some dude in his garage.

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And I just saw another word, 'reformed', which I assume also means reloaded?

Quoted:

No.

Reformed is referring to casings that have been reformed from one caliber to another.

Not trying to be an ass here, but you could have answered most of these questions yourself with a quick google search. For example, plug in "reformed brass reloading" into a google search. This was the first result. Explains it pretty well.

Also, since it sounds like you're wanting to reload, might I suggest looking into the Reloading sub-forum here.

Quoted:
The only "reloaded" ammunition that I will use is Black Hills.

And that's better than some factory ammo from well known manufacturers.

Don't chase after the absolutely cheapest ammo you can find. Buy ammo with a reputation for quality at a good price.

It's not hard to find.

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Do you know of any good .300 BO subsonic rounds that are reliable and cheap (not cheapest)?

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Check the usual suspects, here's link to sgammo: http://www.sgammo.com/catalog/rifle-ammo-sale/300-aac-blackout-ammo