If you’re looking to purchase a handgun, the most important decision is to make sure you buy the correct caliber and type.
Handgun calibers are the sizes of their ammunition, although the terms are often interchangeably used. Different calibers will have different performance levels, and you need to consider which is best for your needs.
In this article, we compare the 9mm vs .45 ACP. We look at the benefits, the difference in size, performance, and ammunition sizes.
Differences in Recoil Force
The difference in recoil force between a 9mm cartridge and a .45 ACP cartridge depends on the weapon you choose to use and the size of the projectile.
Generally, a gun chambered for a 9mm round will have less recoil than one for a .45 ACP due to the shape and size of the bullet. The 9mm round is typically smaller in size and weight when compared to a .45 ACP round and also typically produces less muzzle energy.
A .45 ACP round also has a higher momentum and expands at a wider angle, causing more felt recoil. Additionally, a heavier handgun with less muzzle rise can absorb more of the recoil.
Differences in Sizes
The difference in sizes between the .45 ACP and the 9 mm is quite significant. The .45 ACP rounds are significantly larger than the 9 mm, and the .45 ACP bullets are larger than those of the 9 mm.
The 9 mm rounds typically measure in at 9x19mm, with an average weight of 7.7 grams, whereas the .45 ACP rounds measure in at 11.4x23mm, and an average weight of 10.5 grams. This means the .45 ACP rounds have a larger surface area that allows for more energy to be released upon impact.
The overall size also allows for much greater capacity in a magazine, with a standard 220-round magazine of .45 ACP providing more capacity than a 320-round magazine of 9 mm.
Differences in Terminal Ballistics
The biggest difference between .45 ACP and 9mm lies in terminal ballistics, or the ability of a round to produce a desired effect when it hits its target.
As a slightly shorter round, the 9mm typically has a greater velocity than the .45 ACP. This gives it greater energy, resulting in more tissue disruption, which translates to greater stopping power.
Additionally, the amount of penetration is often further depending on the type of bullet. The 9mm usually penetrates more deeply than the 45 acp auto ammo. While this can be beneficial for applications such as self-defense or hunting, it can also be a liability if the round is used in an area with thin walls or can risk over-penetration and serious bystanders.
Finally, the .45 ACP’s larger surface area often produces a larger wound cavity. This can reduce the chances of the target making it to medical attention and can greatly increase the likelihood of a stop.
Read More About 9MM vs .45 ACP
The 9mm and .45 ACP are popular ammunition choices. Both are very reliable and provide reliable performance. In the end, it comes down to personal preference.
If you want more punch, go with the .45 ACP, but if you need more rounds of lighter ammunition, go with 9mm.
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