The most common number of rounds a magazine will hold is between 8 and 16, depending on the caliber and size of the gun, however, some magazines hold a few more, and you can buy magazines for some guns that hold as many as 33 or even more.
In most circumstances, no. The bullet is too large to chamber in the handgun.
No, it cannot.
No, you cannot.
Pistol.
The grooves in the barrel.
Yes, actually most bullets do. Bullets can range from a handgun at 253 M.P.H (average) to the fastest and biggest bullet i know, the .50 cal BMG at 1901 M.P.H or 2800 ft a second
A bullet from a handgun can travel, on average, about a mile.
No. You cannot fire anything other than a .380 ACP cartridge out of a .380 handgun.
Its the size of the bullet that the gun is made for. its the caliber that a handgun uses
Grooves in the barrel. That is called rifling.
Assuming you mean a bullet fired from a .22 caliber handgun, the answer is, yes, it can, but it depends on several variables.
The magazine.