wacki
Member
Does anyone make "mini" suppressors? I'm thinking something that is very compact in size and reduces the ear shattering 160 dB 9mm shot to something in the range of 140 dB which is the universal impulse threshold limit.
EDITED THIS OUT: 115 dB which is on the bottom end of the threshold of pain.
The goal is to be as small as possible while still maintaining enough suppressive effect that ear muffs are somewhat optional... but still a good idea.
If the answer to this question is no... Then does anyone know how to calculate suppressor size vs decibel reduction? I'm curious how large a suppressor would need to be.
EDIT: After learning about form 1 and researching this more this is what I would build.
For 9mm something that does 8 - 20 dB in reduction would be ideal. My reasons are outlined below.
Size
Small to prevent fatigue after a full day of plinking & target shooting at the range.
Durability
No short term wipes, just metal baffles. It should be durable enough to handle a full day of plinking.
Keeping the woman happy
.22 LR is produces a 152 dB shock wave. The girlfriend can handle that. That's 8 dB in reduction to make the girlfriend happy.
Meeting NIOSH specs
To make NIOSH / CDC hearing loss center happy I'm guesstimating from their exposure charts that i need to get it down to 140 dB. NIOSH allows between 22 and 27 seconds of exposure for those levels if you are wearing ear muffs. That's a lot of range time.... if you are shooting alone. Not sure sure how much that is if you are shooting with others.
To put that in perspective, the Osprey hits 125 dB dry w/ 9mm. That's overkill for my purposes. 35 dB is a LOT more than I need.
MATH
=============
As per NIOSH protocol, assuming 75% efficiency with my 33 NRR Pro-Ears which is 24.75 dB of protection.
152 dB for .22 LR - 24.75 dB = 127.25 dB that hits your ear drum. According to NIOSH you can handle about 1 second of that.
If we bring the crack down to 140 db - 24.75 dB = 115.25 that hits the ear drum. NIOSH allows between 22 and 27 seconds.
EDITED THIS OUT: 115 dB which is on the bottom end of the threshold of pain.
The goal is to be as small as possible while still maintaining enough suppressive effect that ear muffs are somewhat optional... but still a good idea.
If the answer to this question is no... Then does anyone know how to calculate suppressor size vs decibel reduction? I'm curious how large a suppressor would need to be.
EDIT: After learning about form 1 and researching this more this is what I would build.
For 9mm something that does 8 - 20 dB in reduction would be ideal. My reasons are outlined below.
Size
Small to prevent fatigue after a full day of plinking & target shooting at the range.
Durability
No short term wipes, just metal baffles. It should be durable enough to handle a full day of plinking.
Keeping the woman happy
.22 LR is produces a 152 dB shock wave. The girlfriend can handle that. That's 8 dB in reduction to make the girlfriend happy.
Meeting NIOSH specs
To make NIOSH / CDC hearing loss center happy I'm guesstimating from their exposure charts that i need to get it down to 140 dB. NIOSH allows between 22 and 27 seconds of exposure for those levels if you are wearing ear muffs. That's a lot of range time.... if you are shooting alone. Not sure sure how much that is if you are shooting with others.
To put that in perspective, the Osprey hits 125 dB dry w/ 9mm. That's overkill for my purposes. 35 dB is a LOT more than I need.
MATH
=============
As per NIOSH protocol, assuming 75% efficiency with my 33 NRR Pro-Ears which is 24.75 dB of protection.
152 dB for .22 LR - 24.75 dB = 127.25 dB that hits your ear drum. According to NIOSH you can handle about 1 second of that.
If we bring the crack down to 140 db - 24.75 dB = 115.25 that hits the ear drum. NIOSH allows between 22 and 27 seconds.
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