Is 10mm big?
The short version is the 10mm has a longer case, but the. 45 ACP has a larger projectile. The 10mm also has a shorter bullet.
Is 10mm Bigger Than 45?
10mm Auto | .45 ACP | |
Bullet diameter | 0.4 in | 0.451 in |
Case diameter (neck) | 0.425 in | 0.473 in |
Case length | 0.992 in | 0.898 in |
Overall length | 1.26 in | 1.275 in |