The caliber of the cartridge, type of powder, and intended use. Some are noise makers, some have to cycle the action of a weapon, and some launch rifle grenades.
Aerodynamics of the car, the size of the wheels, the weight of the car, and the size of the CO2 cartridge.
BULLETS are the metal projectile- the thing that comes out of the barrel- and contain no powder. The entire round of ammo is a CARTRIDGE (case, primer, powder, bullet). And there is no one answer for a .44 magnum cartridge- powder charge will vary, depending on WHICH powder is used, and which weight of bullet.
Grain is a unit of weight. There are 7000 grains in a pound. The number of grains loaded intoeach cartridge will vary, dpending on the cartidge, and on the powder used. IF it were 7 grains per catridge, you could reload 1000 cartridges. Divide 7000 by the weight of powder for each cartridge.
Grain is a unit of weight, like pounds ounces or grams. There are 7000 grains to a US pound. Both bullets and powder charges are measured in grains. However, when referring to a particular version of a cartridge, grain will USUALLY refer to the weight of the bullet- as in a 125 gr. .357- they are speaking of a .357 Magnum cartridge loaded with a 125 grain bullet.
None. A primer does not contain propellant powder- it contains an explosive that ignites the powder. If you mean how much propellant powder is in a 9mm cartridge, that will depend on which 9mm cartridge (there are nearly a dozen different 9mms) which weight bullet, and which powder. My basic reload data table for 9mm Parabellum (9mm Luger) is 3 pages of data with different powders, bullets, etc. A basic load is 4.5 grains of Bullseye powder with a 115 grain bullet.
Technically speaking- none. A bullet is the solid metal part of a cartridge that is fired out of the barrel. How much gunpowder is in a 9mm Parabellum CARTRIDGE will depend on the powder used and the bullet weight. I reload with 4.6 grains of Bullseye powder with a 115 gr bullet, but there are dozens of other loads.
There is no one answer- because there is no one gunpowder, and no one bullet weight. Amount of powder is driven mainly by those two factors. If you intend to reload, get a copy of ABCs of Reloading, and read entire book first- excellent reference.
The speed of a .303 bullet can vary depending on the specific cartridge and load used, but typically it ranges from around 2,300 to 2,800 feet per second (fps). The exact speed will depend on factors such as the weight of the bullet and the powder charge.
that depends on caliber, bullet weight, powder type, amount of powder, the gun used and other factors.
Gender and weight.
Bullets alone have no velocity. The .223 CARTRIDGE, when fired from an M16 rifle, will drive its bullet at about 3,200 fps. However, velocity depends on the makeup of the cartridge (powder charge, bullet weight) , and which firearm it is fired from.
The 5 factors that affect optimum weight are snacking and tubbing