I have a .40 P226 and wondered if the .40 can be efficiently suppressed?

suppressed: yes.

Efficiently? Not much else besides a .22 can be efficiently suppressed.

If you mean, in terms of drop in decibels, and the round remaining stable while subsonic...sure, it's efficient...but in terms of being quiet: no.

The AAC Evo-40 is a great suppressor and has a lot of fans. I am one of them, a BIG one.

One can not appreciate just how quiet and efficient the Evo-40 really is until they fire or own one. It does not receive the credit that it deserves.

I bought mine because I had read here and elsewhere where many thought the .40 cal. can was not quiet at all. I wanted to know for myself. They were/are wrong! I don't think many of them had ever heard or fired one but had an opinion none the less.

The 9mm cans are quieter, I have a 9mm can also but not an ACC, it's an Impuls II-A. It's is quiet and efficient both dry and wet.

My Evo-40 wet (Clear Glide gel) is quieter than my Impuls II-A is dry. I would love to find someone close by here that has an Evo-9 to shoot it next to.

I use my Evo-40 on a G22 w/a Jarvis bbl. w/ the 14.5x1 LH threads.

My favorite load is a Win. 180 gr. FMJ-TC bullet loaded with 4.5 gr. WST mainly in Win. or Fed. brass but most recently Starline brass.

I chronographed this load thru my setup this past January and got 896.7 fps and 891.8 fps for an average of 2/10 rd. strings.

This load unsuppressed ran 908.1 fps and 900.9 fps for the same number of strings/rounds.

This load is scary quiet! It's sounds to be less than the paintball gun that my son used to have.

Many will say that the .22 RF is the way to go if you want quiet. I have no use/interest in a .22 RF suppressor.

I have a Jarvis threaded barrel and am trying to figure out the thread count on it so I can get a barrel nut and maybe a suppressor in the fall. Thanks interested in making a G35 quiet

As others have said, .40 is doable, but not highly efficient.

I shot an EVO 40 at the last SilencerTalk shoot and was impressed--for a .40 cal--but a good 9mm can is going to sound a lot better than any .40 can (regardless of make) that I have ever encountered.

The biggest thing to point out is USE SUBSONIC AMMO. Doesn't do a whole lot of good to suppress the shot and hear a loud supersonic crack. Unless you're popping your target in the head closer than the minimum distance for the sonic shockwave to form...


Suppressors are for sporting purposes only. The author of this post does not condone or support assassinations or killing of any kind. Unless the killing is of zombies.

quote:

Suppressors are for sporting purposes only. The author of this post does not condone or support assassinations or killing of any kind. Unless the killing is of zombies.

It is soooo nice that you are considerate of Zombies ~ that they need not hear it coming!

quote:

Originally posted by turnercm1776:
The biggest thing to point out is USE SUBSONIC AMMO. Doesn't do a whole lot of good to suppress the shot and hear a loud supersonic crack. Unless you're popping your target in the head closer than the minimum distance for the sonic shockwave to form...


Suppressors are for sporting purposes only. The author of this post does not condone or support assassinations or killing of any kind. Unless the killing is of zombies.

While subsonic ammo optimizes supression, I'd still say that any silencer's effect on overall sound is substantial. I'd shoot any decently silenced pistol 9mm-45acp without hearing protection. I once thought about firing my 1911 and glock 19 out in the woods just to see how loud they are unsupressed. I chickened out after firing my buckmark without hearing protection. My point is an unsupressed 40 or 9mm will knock the shit out of you without hearing protection unless you're jacked up on adrenaline or drugs. I've shot a 45 with a HEMS II and a glock 19 with an EVO-9 without ears on. Subsonic and supersonic ammo went through the glock. The 45 was loud, but if you were, say camping, you wouldn't hesitate to plink without earplugs. Massive difference. If you can get a supressor then just friggin buy the thing!

Again, this is what I said above...I still stand by this statement.

quote:

One can not appreciate just how quiet and efficient the Evo-40 really is until they fire or own one. It does not receive the credit that it deserves.

I bought mine because I had read here and elsewhere where many thought the .40 cal. can was not quiet at all. I wanted to know for myself. They were/are wrong! I don't think many of them had ever heard or fired one but had an opinion none the less.

I fire my Evo-40 "dry" set up on my G22 all the time out of doors w/o hearing protection and it is scary quiet!

It's not .22 RF suppressor quite but then as I also said, I have no use for a RF suppressor.

I have fired a brand new HK Mk 23 SOCOM pistol with the Knight's suppressor attached (dry). They are NOT quiet at all. After a thousand rounds they are louder yet. I don't care at all for the way that the .45 ACP ctg. suppresses.

If I've missed the point here I apologize but the original post asked...if the .40 can be efficiently suppressed?

The answer is yes it can.

If I am not mistaken, MOST .40S&W ammo is subsonic from the factory!

One cannot say that about 9mm.

mark

I bought a 40 with the intention of suppressing it based solely on the knowledge that all 180 gr factory ammo stays just below the speed of sound.

I purchased one of the carbon fiber Impuls-IIa's and have been very happy with it's performance. I do have to wet it to make it efficient, but it sounds like a quiet 22 when shot. I haven't been able to compare it side by side with another silencer. But the numbers on silencertalk say that the Evo-40 is the same loudness as the Evo-9 when both are wet.