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12/12/2010 12:28:56 PM EDT
I know that .22LR is the easiest, cheapest, and gives you the least bang for the buck (pun intended) for supression but what about centerfire ammo?  Which caliber works best with a suppressor (9mm, .45 ACP, .40 S&W, ect)?

Thank you,

CSP
12/12/2010 12:33:14 PM EDT
[#1]
45 ACP
12/12/2010 12:45:18 PM EDT
[#2]
9mm meters the best out of the ones you listed.  They have cans getting them down to 123db now.
12/12/2010 12:46:50 PM EDT
[#3]
For best effect, bullet must be sub-sonic out of your barrel.

12/12/2010 12:59:35 PM EDT
[#4]
I have an SBR in all three calibers, all suppressed, etc.  The 22 is very quiet.  IMO the 147gr 9mm is a little quieter than the 45 but both are very quiet.  It might be more action noise than anything.  All of them function flawlessly.  The 9mm is the most fun.  Dont have any experience with a 40cal but Im not sure it would be the best.....harder to find heavy sub ammo maybe.  
12/13/2010 1:56:09 PM EDT
[#5]
The larger the hole on the end of the can, the easier it is for the sound to exit the can.  Of the center fire calibers you have listed 9mm would tend to be the most quiet.

Scott
12/13/2010 2:49:23 PM EDT
[#6]
Quoted:
For best effect, bullet must be sub-sonic out of your barrel.


Not true.  A silencer only reduces muzzle blast noise, it has no effect on bullet noise and can increase action noise on recoil and gas operated actions a bit.  This means the noise reduction is completely independent of muzzle velocity.  No need to use subsonic ammo.  While subsonic ammo is less noisy due to no sonic boom and in some cartridges a smaller powder charge, it is not required for significant noise reduction.

Ranb

12/14/2010 5:24:55 AM EDT
[#7]
Quoted:
Quoted:
For best effect, bullet must be sub-sonic out of your barrel.


Not true.  A silencer only reduces muzzle blast noise, it has no effect on bullet noise and can increase action noise on recoil and gas operated actions a bit.  This means the noise reduction is completely independent of muzzle velocity.  No need to use subsonic ammo.  While subsonic ammo is less noisy due to no sonic boom and in some cartridges a smaller powder charge, it is not required for significant noise reduction.

Ranb



I believe he was referring directly to the noise resulting of the sonic crack.
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