Hard Truths: Why .45 Cans Suck

Published on October 14, 2021
Duration: 16:38

This video debunks the effectiveness of .45 caliber suppressors, explaining that their larger bore size significantly reduces baffle surface area for gas trapping compared to 9mm suppressors. The host highlights that many .45 cans use the same outer tube as their 9mm counterparts, leading to efficiency issues. He advises against using .45 cans for smaller calibers like .300 Blackout due to poor performance and warns consumers to research thoroughly before investing in expensive suppressors.

Quick Summary

Many .45 caliber suppressors underperform because their larger bore diameter reduces the baffle surface area available to trap expanding gases. This physics issue, often exacerbated by manufacturers using the same tube size as 9mm cans, leads to less effective sound suppression.

Chapters

  1. 00:00Intro: The Cost of Suppressors
  2. 01:27Suppressor Regulations & Market Growth
  3. 04:07Debunking .45 Can Myths
  4. 06:00Range Testing Methodology
  5. 08:52Obsidian 9 vs. Obsidian 45 Comparison
  6. 11:25Physics: Bore Area & Gas Flow
  7. 14:29Marketing Hype & Final Advice

Frequently Asked Questions

Why do .45 caliber suppressors often perform poorly?

.45 caliber suppressors typically have a larger bore diameter. This reduces the available baffle surface area needed to trap and redirect expanding gases effectively, leading to less sound suppression compared to smaller caliber suppressors like those for 9mm.

What is the 'hot dog down a hallway' effect in suppressors?

This term describes using a suppressor with a significantly larger internal volume than the projectile's diameter, such as a .45 can on a .300 Blackout. It leads to poor suppression because gases escape inefficiently around the projectile.

Are .45 caliber suppressors less efficient than 9mm suppressors?

Generally, yes. Even when using the same outer tube, the larger bore of a .45 suppressor means less baffle surface area is available to slow down gas expansion. For example, the Obsidian 45 has less baffle efficiency than the Obsidian 9.

What factors make suppressors expensive?

Suppressors are expensive due to material costs, precision manufacturing, and the NFA (National Firearms Act) regulations. The cost includes the suppressor itself (often $800+), a $200 tax stamp, and a significant waiting period for approval.

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