9mm vs 45 ACP is perhaps the greatest caliber debate that seems to never die.
There's no denying that the 9mm has higher magazine capacity than the 45 ACP as the 9mm is a smaller round.
Often he who brings the most rounds to the fight wins and 9mm definitely jams a lot of rounds in the mag.
However, stopping power and bullet diameter is another issue as well as penetration.
The 45 ACP is an excellent cartridge for penetration and kinetic energy without punishing recoil, albeit more than the 9mm.
Learn more in our latest Ammunition Guide Video at Ammo.com.