suppressors -- which is quieter, .45 or 9mm?

Streetracer · January 30, 2007, 11:33 AM

All things being equal, what's quieter? A 9mm can or a .45 can?

For example, a G21 w/ AAC Evo 45
a G17 w/ AAC Evo 9

Thanks for any responses.

Zak Smith · January 30, 2007, 11:52 AM

With the same can design and same speed ammo, I think the smaller caliber will be quieter.

OBIWAN · January 30, 2007, 12:37 PM

seems logical...smaller hole

I have heard from people that have both that the 9mm works better....as in quieter

But I have no idea what other variables are being controlled in those observations

VUPDblue · January 30, 2007, 03:39 PM

I will tell you that having owned both, the 9mm is by far the quietest of the two. Supposedly AAC has a new .45 can (Black Box IIRC) that is supposed to be the quietest .45 can out and will rival 9mm cans. Traditionally speaking, though, .45 cans are a bit louder than other calibers.

MDW Guns · February 1, 2007, 06:26 PM

The .45 is louder.

jcims · February 1, 2007, 08:39 PM

This

is louder.

I'm never (ok, rarely) going to argue with experience, but doesn't the fact that 9mm goes supersonic going to affect it negatively? If youtube comes back up i'll link in a pretty impressive video of a suppressed .45

Streetracer · February 2, 2007, 03:49 PM

Thanks for the replies. Yes, I thought I mentioned all things being equal (including velocity). It looks like the general consensus is the 9mm is definitely quieter.

tepin · February 4, 2007, 06:32 PM

you need to buy sub-sonic ammo

January 30, 2007, 11:33 AM	#1
Streetracer Junior Member Join Date: July 25, 2001 Posts: 2	suppressors -- which is quieter, .45 or 9mm? All things being equal, what's quieter? A 9mm can or a .45 can? For example, a G21 w/ AAC Evo 45 a G17 w/ AAC Evo 9 Thanks for any responses.

January 30, 2007, 11:52 AM	#2
Zak Smith Senior Member Join Date: December 12, 1999 Location: Fort Collins, Colorado, USA Posts: 2,682	With the same can design and same speed ammo, I think the smaller caliber will be quieter. __________________ Zak Smith . DEMIGOD LLC . THUNDER BEAST ARMS CORP . COLORADO MULTI-GUN *My PM inbox full? Send e-mail instead.*

January 30, 2007, 03:39 PM	#4
VUPDblue Senior Member Join Date: December 18, 2005 Location: Central Indiana Posts: 1,981	I will tell you that having owned both, the 9mm is by far the quietest of the two. Supposedly AAC has a new .45 can (Black Box IIRC) that is supposed to be the quietest .45 can out and will rival 9mm cans. Traditionally speaking, though, .45 cans are a bit louder than other calibers. __________________ Silencers have NEVER been illegal !

February 1, 2007, 06:26 PM	#5
MDW Guns Member Join Date: January 31, 2006 Location: Maine USA Posts: 86	The .45 is louder. __________________ ARMED MEN ARE CITIZENS UNARMED MEN ARE SUBJECTS NRA, FWR 2711 Check www.mdwguns.com for great deals!

February 2, 2007, 03:49 PM	#7
Streetracer Junior Member Join Date: July 25, 2001 Posts: 2	cans Thanks for the replies. Yes, I thought I mentioned all things being equal (including velocity). It looks like the general consensus is the 9mm is definitely quieter.

January 30, 2007, 12:37 PM	#3
OBIWAN Senior Member Join Date: March 16, 1999 Location: Colorado Posts: 2,340	seems logical...smaller hole I have heard from people that have both that the 9mm works better....as in quieter But I have no idea what other variables are being controlled in those observations

February 1, 2007, 08:39 PM	#6
jcims Senior Member Join Date: August 21, 2005 Location: Ahyah Posts: 290	This is louder. I'm never (ok, rarely) going to argue with experience, but doesn't the fact that 9mm goes supersonic going to affect it negatively? If youtube comes back up i'll link in a pretty impressive video of a suppressed .45

February 4, 2007, 06:32 PM	#8
tepin Senior Member Join Date: July 14, 2006 Location: FL Posts: 129	you need to buy sub-sonic ammo