Quiet Soviet Revolver
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Gunslinger808
Member
The revolver uses a Nagant type action which causes the cylinder to move forward and lock up against the forcing cone during firing.
That combined with the specialty 7.62x42mm ammo causes it to be so quiet.
Evidently, the ammo is designed similar to Simunition rounds which use a reduced powder charge that forces an internal piston forward which propells the bullet.
Since the burnt gasses are delayed by the piston, it makes it as quiet as a suppressed pistol.
ETA:
Here's an article that explains the cartridge better:
http://sadefensejournal.com/wp/?p=307&page=2
That combined with the specialty 7.62x42mm ammo causes it to be so quiet.
Evidently, the ammo is designed similar to Simunition rounds which use a reduced powder charge that forces an internal piston forward which propells the bullet.
Since the burnt gasses are delayed by the piston, it makes it as quiet as a suppressed pistol.
ETA:
Here's an article that explains the cartridge better:
http://sadefensejournal.com/wp/?p=307&page=2
Last edited:
shouldazagged
Absent Comrade
Weird. Wonder if they have any bridges for sale?
Ivan the Butcher
Member
I read the artical. The level of noise was 124+ dB. That seems loud to me, can anyone say what a sub-sonic 308 win. that is silenced has for dB or a 147 gr. silenced 9 mm round? Or the silenced Chinese Tarkorov with the special 7.62 x 25 147gr ammo? Ivan
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My Understanding Is.......
that Nagant pistol is available in 22lr. Thread that baby & it should be relatively quiet with a can. I saw one on GB once, but let it slip away.
Ned
that Nagant pistol is available in 22lr. Thread that baby & it should be relatively quiet with a can. I saw one on GB once, but let it slip away.
Ned
Gunslinger808
Member
A suppressed .22 using subsonic ammo is right about 115 to 130 db, which is really quiet.
An unsuppressed .308 is right around 175 db which gives you an idea of the dB "curve".
Decibles are not measured like temperature where 50 degrees is half of 100.
It's more of a power of curve, sorta like the difference between a 8 magnatude earthquake, and a 9.
Teddydog
Member
IIRC, every increase of 10 dB increases the ENERGY of the sound by a factor of 2. Thus 90 dB is TWICE as loud as 80 dB.
Rob
Rob
Tain't So McGee
db calculations are logarithmic function. (NOT today lesson)
Using signal voltage in the following:
3 db has twice the electrical POWER
6 db has twice the electrical VOLTAGE
6 db has twice the electrical POWER
10 db has TEN times the POWER
Relative to sound and the human ear:
3 db is the minimum level difference that most can identify.
10 db increase is usually perceived by observer as TWICE as loud.
Bekeart
db calculations are logarithmic function. (NOT today lesson)
Using signal voltage in the following:
3 db has twice the electrical POWER
6 db has twice the electrical VOLTAGE
6 db has twice the electrical POWER
10 db has TEN times the POWER
Relative to sound and the human ear:
3 db is the minimum level difference that most can identify.
10 db increase is usually perceived by observer as TWICE as loud.
Bekeart
