You won't get it to fit into the chamber.
.22, 9mm, 45 ACP are among them.
9mm target ammunition is commonly less expensive than .45 ACP.
45
No
No. 9mm Parabellum ammo is about .35 caliber, and the .45 is, well, .45 caliber. The .45 cartridge is too wide to fit in the chamber.
Browning never "made" a 45. They sold the SIG with their name on it. Similar to their 380 which was made by Berreta.
9mm= .355 45 ACP = .452
Of course a 45 is more powerful, but the 9mm has the advantage of speed and a larger chamber. If you only get one shot, pick 44. Multipule. Then pick 9mm
The 9mm came into popularity because of it's high capacity magazines which hold between 15-20 rounds where a .45 holds between 7-10. the .45 fires a 185-230 grain bullet, the 9mm about half that. The stopping power of the 9mm is minimal compared to the .45. The bullet diameters are .45 inch and .38 inch. The 9mm is less expensive to shoot and recoil is minimal which makes it a good choice for target shooting, the .45 is a little more costly to shoot and has a bit more recoil. It would also depend on what you want it for, to shoot target and such the 9mm will do it for you, for defence I would take the .45 over the 9mm alrhough the 9mm is a fair defence piece. they both have their points, Good luck choosing......
Generally speaking, the .45 caliber bullet is larger in diameter and heavier than a 9mm bullet.
The actual power of any given cartridge is based on speed and weight of the bullet. There are multiple different loads for the 9mm Parabellum, and for the .45 ACP. HOWEVER- in general, the 9mm Parabellum has a higher energy than the .45 ACP. Search Wikipedia for 9mm Parabellum, and for .45 ACP. Scroll down for energy figures on the left. It should be noted that almost all .45 loads have heavier bullets, and the .45 ACP is generally considered to have greater "stopping" power than the 9mm.
Assuming you're referring to the 9x19 Parabellum/Luger round, the 9mm travels faster than the .45 ACP.