In the U.S. there is no limit, at least in any state that I know of (but you should check your local laws). People that shoot competitively and people that load their own ammo sometimes buy 10,000 or more rounds/bullets at a time.
Federal Premium Ammunition belongs to a defense contractor called Alliant Techsystems; its stock symbol is ATK. Its stock sells in the $125-$140 range, and it's pretty stable.
Winchester is one.
OLN (Stock Symbol) It is somewhat diversified as it is a chemical company, ammunition and rifle manufacturer.
They are nothing since there is no such word!
Winchester is owned by the Olin corp the ticker is "OLN"
The ship carried 4,200,000 rounds of .303 rifle ammunition. At the time, Atlantic shipping was being monitored by German submarines to prevent such war materials from being transported. This was the justification for the sinking of the Lusitania and the death of 1,198 civilans.
There are many substances that are toxic in large amounts, but are vital for human health. One of these is cobalt.
11,000,000
Fluids
a quanity into which each of two or more quanities
Rain.
There are many brick suppliers. For small quanities, you can check craigslist.