well i just came back from my vacation.. it worked the way i described it in the previous build, but i'm not up to date...
things might have changed.. it'll take some time for me to get back into it.
especially since i have been recruited as a character modeler for the zeitgeist mod (source engine)
i'll let you know if i find out anything new....
about the ammo: i have no idea if this is realistic.. but i remember that in the game 'boiling point' you were able to buy 3 different types of ammo.. normal/AP and sub-sonic... there were no silencers in the game but using sub sonic ammunition had the same effect.
EDIT:
taken from wikipedia:
In weapons firing supersonic bullets, the supersonic bullet itself produces a loud and very sharp sound as it leaves the muzzle in excess of the speed of sound and gradually reducing speed as it travels downrange. This is a small sonic boom, and is referred to in the firearm field as "ballistic crack". Subsonic ammunition reduces this sound, but at the cost of lower velocity, often resulting in decreased range and effectiveness on the target. Military marksmen and police units may use this ammunition to maximize the effectiveness of their silenced rifles. While the range may be decreased when using subsonic rounds, this may be acceptable for specialized situations, where the absolute minimum amount of noise is required.[14]
However, the numeric effectiveness of subsonic rounds is, again, misrepresented by media. Independent testing of commercially available firearm suppressors with commercially available subsonic rounds has found that .308 subsonic rounds decreased the volume at the muzzle 10 to 12 dB when compared to the same caliber of suppressed supersonic ammunition.[7] When combined with suppressors, the subsonic .308 rounds metered between 121 and 137 dB.
http://en.wikipedia.org/wiki/Suppres..._versus_volume