depends on where you are, and the law in that place. In one US state, you must have a Firearm Owner's ID Card to buy ammo. In some other countries, possession of one cartridge is illegal without oermits. In the US, a convicted felon may not possess ammunition. Without more information from you, there is no way we can answer.
It depends on what kind you're referring to. It can range from a few cents for a .22 (although, it's unlikely that you will find single bullets for sale anywhere) up to several dollars for a large caliber bullet.
A single .44 caliber bullet at point blank range.
Less than 200 feet. The "single bullet theory" is kind of a misnomer, as under this theory, two bullets were actually shot -- on hitting JFL in the head and the other hitting JFK in the back/neck and then going on to hit Gov Connolly. Some people call this the Single Bullet Theory in reference to that particular bullet. All the shots taken by Oswald were relatively close range.
The magazine of a gun holds the bullets. Most magazines are single stack - each bullet directly above the next. Double stack magazines have 2 rows of bullets, slightly staggered.
Single bullets are not sold at gun shops. Collector's will sell single examples and prices can range from less than a dollar to multiple hundreds of USD
If you mean a pistol from the year 1750, MOST held 1 bullet, rarely, 2 bullets. This was still in the era of flintlock guns, loaded with loose powder and ball. No revolvers, no cartridge firearms. Most firearms were single shot- rarely, a two barreled gun that could fire one bullet from each barrel.
The definition of an automatic is that it will fire bullets as long as the trigger is depressed and ammunition is available. Some automatics have a switch that will change it from auto to single shot.
No. .22mag. bullets are too long, and they aren't heel-type bullets
April 28th
What about it? http://en.wikipedia.org/wiki/Single_bullet_theory
If you are a citizen of British Columbia then no, it's not illegal to claim single.
That all depends on the bullet and the armor. There is no single correct answer without a lot more specifics.