9mm Rifles Are Pointless?

Summary

In this video, the presenter compares different 9mm firearms with varying barrel lengths to assess factors like accuracy, velocity, and penetration. The comparison includes a 4.3-inch barrel, a 9-inch MP5 clone, and a 16.37-inch barrel rifle. The video explores the impact of barrel length on performance, particularly with different types of ammunition such as Plus-P and subsonic loads. Despite some variations, the results show only minor differences in velocity and penetration between the setups. The video ends with a humorous take on whether longer barrels truly offer significant advantages, concluding with the idea that it's not about barrel length, but how it's used.

Takeaways

• 😀 Longer barrels don't necessarily improve accuracy with 9mm firearms, as results were inconsistent across different setups.
• 😀 Barrel length has a minor impact on velocity, with longer barrels offering slight increases, but not drastically improving 9mm performance.
• 😀 Plus P ammo, while offering increased velocity, doesn't produce huge gains in power over standard 9mm rounds in this comparison.
• 😀 Subsonic rounds maintain their status as 'subsonic' regardless of barrel length, providing no significant velocity gain from longer barrels.
• 😀 Penetration into materials like plywood and ballistic gel was similar across different barrel lengths, indicating that velocity isn't the only factor affecting penetration.
• 😀 The PCC (Pistol Caliber Carbine) with a 9-inch barrel showed better consistency and performance in some areas over the rifle with a longer barrel.
• 😀 Even with increased velocity, neither longer barrels nor plus P ammo drastically improved penetration of 3/4-inch plywood.
• 😀 In tests with ballistic gel, deeper penetration wasn't always achieved with longer barrels, with slight differences between ammo types.
• 😀 The 16.37-inch barrel did not noticeably outperform the 9-inch barrel in terms of depth or wound channel effectiveness in gel tests.
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Q & A

Why might someone choose a longer barrel over a shorter one for a 9mm firearm?

While many people associate longer barrels with better accuracy, the difference in accuracy isn't significant with 9mm firearms. The primary reason someone might choose a longer barrel is for potential gains in velocity and power, although this is more apparent with larger calibers.

Does a longer barrel always result in more accuracy for 9mm firearms?

No, a longer barrel does not automatically make a 9mm firearm more accurate. Accuracy is more dependent on other factors such as the quality of the barrel, the ammo used, and the shooter’s skill.

What does the script reveal about the accuracy of different barrel lengths for 9mm firearms?

The script tests various 9mm setups and finds that longer barrels do not necessarily outperform shorter barrels in terms of accuracy. While some rifles and PCCs (Pistol Caliber Carbines) perform better, there is no clear advantage in accuracy purely due to barrel length.

How does barrel length affect velocity and power for 9mm ammunition?

With a longer barrel, you typically gain some increase in velocity, which can translate to more power. However, for 9mm ammunition, this increase is not as substantial as it would be with larger calibers. The 9mm’s small cartridge and fast-burning powders limit the velocity gains.

Is there a significant difference in velocity between different barrel lengths for 9mm ammunition?

While there is some increase in velocity with longer barrels, the difference is not huge. The 9mm cartridge does not have enough powder to create a massive jump in velocity with barrel length increases, especially when using standard loads.

What are the effects of using +P ammunition in longer barrel setups?

The use of +P (overpressure) ammunition shows more noticeable gains in velocity and power, though even with a longer barrel, the difference is not as dramatic as expected. The velocity increase is still somewhat modest.

How does the 9mm cartridge perform with subsonic ammo in longer barrels?

Longer barrels do not significantly affect the performance of subsonic ammo, as the bullets stay below the speed of sound, even with longer barrels. The 9mm’s relatively small powder charge and quick-burning powders limit the velocity increase.

What was the result of testing 9mm ammo on various materials like lumber and plywood?

Both shorter and longer barrels with 9mm ammo showed similar results in penetration, with rounds passing through lumber and plywood but not causing any major difference in the penetration power based on barrel length.

Does the 9mm bullet's velocity affect its performance in ballistic gel tests?

The script shows that the velocity increase from longer barrels does not drastically improve the bullet’s performance in ballistic gel. The wound channels produced by longer and shorter barrels are very similar, with minor differences in depth and damage.

What does the script suggest about the relationship between barrel length and penetration power?

The script suggests that longer barrels do not necessarily result in significantly greater penetration power. Whether using a pistol, PCC, or rifle-length barrel, the penetration results on ballistic gel and other materials like sand were fairly similar.