9mm vs 5.7x28 Pistol Which one is quieter?

[Sole Oak Supply]

I know this is not 100% fair since I used Supersonic in the 5.7x28 and subsonic in the 9mm, but still fun to see the guesses.

Equipment used:

Glock 34 with Rugged Obsidian 9 short and long Configuration, and CGS Mod 9Sk

PSA Rock with OSS / HukWrx Rad 22

Meter: My Ears...

 

[Sole Oak Supply]

Hint: Everyone that has voted so far is incorrect!

 

[Sole Oak Supply]

3 right answers so far...

 

[GAgunLAWbooklet]

so "9mm short" means 9x19 mm or 9mm parabellum, but using a short version of your suppressor? I would have assumed that "9 mm short" meant 380 ACP which is known as 9 mm short in many other parts of the world / other languages.

 

[Sole Oak Supply]

so "9mm short" means 9x19 mm or 9mm parabellum, but using a short version of your suppressor? I would have assumed that "9 mm short" meant 380 ACP which is known as 9 mm short in many other parts of the world / other languages.

Yes 9x19mm, used the same ammo for all 9mm just the short version of the can. I can see where that can be confusing.

 

[Sole Oak Supply]

about 2 hours left to vote.

 

[Apollo]

34 obsidian long config

Sent from my SM-S918U using Tapatalk

 

[Sole Oak Supply]

9mm long, 5.7x28, 9mm Short​

Was the Correct answer!

There was a very obvious difference in sound with the three.

I just received some 62gr Subsonic 5.7x28, and I am going to redo the test in the future.

Thanks to everyone that voted.

 

[AK74U]

Where you find that ammo?

9mm long, 5.7x28, 9mm Short​

Was the Correct answer!

There was a very obvious difference in sound with the three.

I just received some 62gr Subsonic 5.7x28, and I am going to redo the test in the future.

Thanks to everyone that voted.

 

[Sole Oak Supply]

One of my Distributors has 116 boxes in stock, do you want me to get them all for you???

No seriously, I can't efficiently order a couple boxes by themselves because of shipping, but I can put some on the order next time I order from them if your not in a hurry? There $49.00 for 50 rounds.