Well this is quite interesting. I never readed about the velocity effect itself but with common sense (after seeing few profesionaly made realism games):

Silencer removes/controls the gas=less gas=less speed

Are some older type silencers pherhaps those that slow down the bullet ?

I do hope that we go away from the magical suppressors that games use were we only hear pew pew even when near the gun . The sound is actually much higher then other sounds we meet in our every day life.

^ and thats the fact

i think cqb gameplays mp5 had louder voice with supressor

According to wikipedia, the suppressors lower the noise for 30dB, which is still very loud (160dB for non-suppressed shot).

I would disagree... its a video game... I like having my "pew pew"/less accurate options...

I disagree with your theory

1) Yup in the new suppressors there's no friction between the bullet and the baffles, BUT the clear hole in the suppressor is 1mm larger!
Meaning, air can escape around the bullet!

2) With a longer barrel the velocity of the gas pushing out the bullets is faster, therefor the bullet's too.

3) Suppressor slows down the gas, that pushes out the bullet.

Conclusion: So tell me... if You have slower gas pushing out the bullet, how does the bullet become faster? No, the bullet definitively will be slower.

About lower damage: So which bullets are more dangerous? The fast ones or the slower ones?

a) Faster bullet's pierce trough your body. The slower once get stuck in your body. I really dunno which injury is worse xD I think/vote on "when it gets stuck"

b) IF there's BODY ARMOR in CQB (remember the comment?), it should deflect/absorb the slower bullets. Faster ones pierce trough the armor, BUT get stuck in your body xD
-- would be a nice realistic feature in CQB. the heaviest body armor would completely absorb all damage taken from suppressed shots. You would move much MUCH slower with that armor tough, and ONLY the torso + upper part of legs, shoulders are protected.

Edit: There may be WIPES together with baffles in the suppressor. Wipes are touching and braking the bullet. That's the"pew" sound that you hear. So the bullet will be that much slower by the friction.

I actualy like the idea of silencer effecting to the damage made to body armor. But one problem.
9mm doesnt have ANY effect to heavy body armor at any distance. So some might start whine about that. I dont know what is the bullet type of mp5 on the cqb tho

Errrr... flaming and vulgarism is not an argument, and you don't prove to be more intelligent by doing it - though it's not science, it is proven

I read trough the whole page, and I don't remember the site mentioning the INCREASE of the bullet's velocity. There was a lot of stuff about how the silencer reduces recoil, coolants, and how fast a silencer is getting useless.

However, some suppressors are not slowing down the bullet (the velocity-loss is ignorable), but never increase speed. With the silencer screwed on the end of the barrel, the gas has a bigger space to expand to, before it exits. Therefor the pressure is much lower... 60-70 psi.

My theory is based on physics-knowledge and wikipedia, instead of cod. No, im not bragging.

I guess we'll need to think of some additional disadvantages to wearing heavy armor that has something to do with reality and balances out the game.
1) it doesn't cover your entire body, so a headshot remains a headshot.
2) slower movement speed
3) faster stamina consumption maybe?

what else?

I don't have much knowledge in this domain, but from my basic knowledge, I would have to agree with InVader.

As far as I know, there are three distinct sounds when firing:

Mechanism: not very loud, simply the trigger and other moving parts
Gas escaping: very loud, trails off in the signature "firearm-shot" way
Bullet breaking sound barrier: very loud as well, though less characteristic

A suppressor normally acts by slowing down the gas through a few, smaller and tortuous escapes, reducing the muzzle blast, and sometimes by slowing down the bullet to a subsonic level, therefore eliminating the sonic signature. Important to note, however, that many 'small calibre' firearms already use subsonic rounds (mp5sd, for example, which uses an intergrated silencer system).

While I understand what you mean by the added barrel length increasing the velocity, the way a suppressor works should not normally increase the velocity of the exiting bullet, other than by perhaps shielding it a tad bit longer from the wind.

Go here, read the book, learn something besides what hand is better for whacking with.

FFS.

http://www.amazon.com/reader/0873649095 ... 0873649095

as someone practicing 'The Stranger', I am quite offended by your presumptions. However, i have to admit, after reading the linked page and a bit of research that some suppressors do actually increase velocity, though not all.

I would like to see the speed / sound ratio of such suppressors compared to other types however. It's really quite interesting.

The best I could find was a site with a guy analyzing data he had collected (between temp of supp. and speed of shots). Although his regression line showed a strong correlation (R^2 = 0.60), he forgot the fundamental rule in statistics. Correlation doesn't imply correlation, just because they are strongly correlated doesn't mean one causes the other. The other problem was that when he put on hte suppressor, his standard deviation of velocity doubled which is not a good sign. Unfortunately, I would've liked to run some tests on his data but he didn't give the data in a chart .