The .40 is larger in diameter and (normally) has a heavier bullet.
9mm = .355 40 cal = .40
No, 9mm
No
Yes, a .30 caliber is larger than a 9mm. The .30 caliber refers to a bullet diameter of approximately 7.62mm, while 9mm refers to a bullet diameter of 9mm. Therefore, the .30 caliber bullet is wider and typically associated with larger, more powerful cartridges compared to the 9mm.
The .40 caliber fires a larger, more powerful cartridge than the 9mm. which is about .35 caliber. Minor additional info: Many models of pistols that are available in 9mm or .40 are otherwise the same, except for caliber. For instance, a Glock 19 and a Glock 23 are the same exact guns, but the 19 is a 9mm and the 23 is a 40...the 23 holds 2 less rounds.
40
No
No. 9mm and .40 are not interchangeable.
the 40 cal is a little bigger then the 357
Yes, a 45 caliber bullet is bigger than a 40 caliber bullet. A .45 is0.45 inches wide in diameter and a .40 is 0.4 inches in diameter.
No. Only shoot the caliber printed on the barrel.
Caliber is in reference to the diameter of the bullet. A .40 (which is what I have) is .40 inches in diameter. A .50 caliber is .50 inches in diameter (half an inch). So a caliber is the inches in diameter. Not including the 9mm which I cannot stand