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No. The bullet is too big. A 30-30 is a .30 caliber bullet. a .38 bullet is .357 caliber
No. A .32 bullet is about 7.65mm, and a .380 is 9mm. It is too big to chamber.
Any bullet that has a diameter of one half inch is a .50 caliber bullet. There are different .50 caliber bullets- my Hawken muzzle loading rifle shoots a .50 caliber lead bullet, but different from the .50 Browning Machine Gun (that is also used in the .50 Barret sniper rifle)
380 millimeters is 1 foot and 2.96 inches.
The Heckler & Koch MP5 submachine gun fires a 9x19mm cartridge, which has an overall length of 19.69 millimeters, and a rim diameter of 9.96 millimeters. The bullet itself has a diameter of 9.01 millimeters, with length depending on the type of bullet (ie jacketed, unjacketed, hollow-point).
A 410 shotgun is basically a 41 caliber smoothbore. A 45 caliber round may fit in the chamber, but the bullet is too big. Don't do it.
The typical rifle bullet was .303 inch caliber. The same round was used in most of the light machine guns.
A BB pellet is only a couple millimeters thick. The pellets are very small. BB's are usually .175 Caliber a regular Air pellet is .177 Caliber
Assuming the question is in regard to firearms and ammunition, you can read the "caliber" of a round as a decimal how wide the bullet is in inches. So a .40 caliber round is .4 inches wide, or about 10.16 millimeters wide. A .45 caliber round would be .45", so a little bit fatter than the .40 caliber round. The caliber doesn't tell the whole story of a round though, it doesn't say how long the bullet is, how heavy, how big the casing behind the round is, how much kinetic energy is hits with, etc. The .40 S&W round has an average of 425 ft/lbs of energy right at the muzzle, while the .45 ACP, a "bigger" round, has about 400 ft/lbs.
The largest caliber bullet commercially available is the .950 JDJ, which is nearly an inch in diameter. It is primarily used in big-game hunting rifles and is known for its immense stopping power due to its size and weight.
The duration of Big Bullet is 1.5 hours.
I think you mean .32 caliber, not mm. It means that the gun fires a bullet that is about 32/100ths of an inch in diameter. A 9mm fires a bullet 9mm in diameter- or about .35 inches in diameter. A 32 mm bullet would be about the size of big (D cell) flashlight battery!