Hunting with a suppressor?

[Klunatic]

Do realize that a high powered rifle with a supersonic round will not be quiet, it will just be quieter. Without suppressor around 160 dB, with suppressor about 130 dB.

Its a lot quieter. The decibel scale is not linear, it is logarithmic. The loudness of a gunshot at 160db is 8 times as loud as 130db.

 

[Pinecone]

I am not saying that 130dB is not better than 160dB. I am just saying the 130dB is not necessarily safe without hearing protection.

And the difference in sound pressure from 160 to 130 is 30 times, not 8 times

But that also means 130dB is 30 times as much sound pressure as 100 dB.

And 100 is 30 times 70.

For reference, normal conversation is in the 75 - 80 range.

Edited - fixed misplaced decimal.

 

[Speed3]

I am not saying that 130Db is better than 160dB. I am just saying the 130dB is not necessarily safe without hearing protection.

And the difference in sound pressure from 160 to 130 is 300 times, not 8 times

But that also means 130dB is 300 times as much sound pressure as 100 dB.

And 100 is 300 times 70.

For reference, normal conversation is in the 75 - 80 range.

Normal conversation might be in that range...but how is that applicable to a firearm? A suppressed .22lr running subsonics 117db range, probably A LOT more applicable than normal conversation.

 

[armed ferret]

I am not saying that 130Db is better than 160dB

Well you should be, because it is.

As for the rest of your ridiculous arguments, let's ban hunting because it's loud...

 

[browning guy]

Well you should be, because it is.

As for the rest of your ridiculous arguments, let's ban hunting because it's loud...

Yea ban hunting it hurts deer ears!!

 

[Klunatic]

Not sure how you came up with 100 times sound pressure. Perceived loudness is 8 times as loud, Sound level pressure change of 30db is roughly 31 times the pressure (RMS).

This is a pretty good link that explains db and perceived loudness. http://www.sengpielaudio.com/calculator-levelchange.htm

 

[Pinecone]

Well you should be, because it is.

As for the rest of your ridiculous arguments, let's ban hunting because it's loud...

That isn't what I said, check again.

Sorry, missed a word.

 

[Pinecone]

Not sure how you came up with 100 times sound pressure. Perceived loudness is 8 times as loud, Sound level pressure change of 30db is roughly 31 times the pressure (RMS).

This is a pretty good link that explains db and perceived loudness. http://www.sengpielaudio.com/calculator-levelchange.htm

Sorry, misplaced the decimal, it is 30 times. 10dB is 10 times. Sound pressure doubles for each 3 dB of increase. It is a Log 10 scale.

From your link

Ratio doubling means:
− a power level of +3 dB, or a sound intensity level of +3 dB

We used to use a 5 db Doubling rate for hearing protection, but are switching to the more correct 3 dB doubling. The 5 dB doubling rate was used to cover some slop in measuring and some environmental effects. Europe has used a 3 dB doubling rate for many years. But they use a 40 hour time weighted average, rather then US 8 hour TWA.

 

[boatbiologist]

I have hunted deer in Garrett County with a suppressor for years.

Sadly, the area I hunt is overpopulated by black bears, so the deer are scarce.

 

[armed ferret]

That isn't what I said, check again.

I quoted you and didn't change it except to snip some things after that statement.

So actually, it's exactly what you said.

 

[ducrider45]

Do realize that a high powered rifle with a supersonic round will not be quiet, it will just be quieter. Without suppressor around 160 dB, with suppressor about 130 dB.

300 blackout bolt gun. I plan on using a Rem. 700 chambered in 300 Blackout with a Silenserco Saker 762 on it. Its a 120 yard gun with subs in it.

 

[Speed3]

300 blackout bolt gun. I plan on using a Rem. 700 chambered in 300 Blackout with a Silenserco Saker 762 on it. Its a 120 yard gun with subs in it.

If you are hunting in maryland, my guess is your subs wont meet the ft lb of energy required at the muzzle. My guess is that you will have to run 125gr or less in order to meet the required energy.

•Rifles used for deer and bear hunting must use ammunition developing a muzzle energy of at least 1,200 foot pounds.

If it was a pistol, you would be good...

•Modern handguns may be used to hunt deer only in those counties where the use of a breech-loading rifle for deer hunting is permitted with the exception that modern handguns may be used to hunt deer throughout Frederick County. Any modern handgun used for deer and bear hunting must have a barrel length of 6 inches or more and use ammunition which produces a muzzle energy of 700 foot-pounds or more.

 

[Pinecone]

I quoted you and didn't change it except to snip some things after that statement.

So actually, it's exactly what you said.

That was why the smiley.

 

[Hansohn Brothers]

If you are hunting in maryland, my guess is your subs wont meet the ft lb of energy required at the muzzle. My guess is that you will have to run 125gr or less in order to meet the required energy.



•Rifles used for deer and bear hunting must use ammunition developing a muzzle energy of at least 1,200 foot pounds.

Rem 125gr is at ~1350 ft lbs whereas the 220gr subs are at ~500 ft lbs.

 

[Speed3]

300 blackout bolt gun. I plan on using a Rem. 700 chambered in 300 Blackout with a Silenserco Saker 762 on it. Its a 120 yard gun with subs in it.

Rem 125gr is at ~1350 ft lbs whereas the 220gr subs are at ~500 ft lbs.

He mentioned running subs and it being a 120 yard gun....

 

[Pinecone]

Yeap, 220 gr at 1050 fps is 538 foot pounds. Not legal for deer in MD. Rifle OR pistol.

 

[Kingjamez]

And the difference in sound pressure from 160 to 130 is 30 times, not 8 times

But that also means 130dB is 30 times as much sound pressure as 100 dB.

And 100 is 30 times 70.

Sorry, misplaced the decimal, it is 30 times. 10dB is 10 times. Sound pressure doubles for each 3 dB of increase. It is a Log 10 scale.
.

Multiple Math Fail.

+3db=2x linearly. +6db=4x... 10db=10x. If 10dB=10x, then 20dB=100x, and 30db=1000x.

In linear terms a 30dB reduction is a 1000 times reduction in intensity. Because human hearing is NOT linear, as Klunatic pointed out, the perceived reduction would be 8 time.

-Jim

 

[HT4]

you oughta see what momentary exposure to 20 pounds of potassium chlorate about 8 feet away does.

hint: you get tinnitus for the rest of your life. from one single momentary incident.

20lbs? God damn! What fuel? Must have been a pretty crappy one, because at that distance, only 1lb of a mixture containing potassium chlorate and any respectable pyro fuel is more than enough to kill you!

 

[rico903]

I don't know anything about the mathematics. I also don't know the decibels of a 9MM pistol but I do know that ear plugs with a 26-30 db rating make all the difference in the world, so yeah, a 30 db reduction is a lot. Much more than I thought it would be, not linear rating for sure.

 

[armed ferret]

20lbs? God damn! What fuel? Must have been a pretty crappy one, because at that distance, only 1lb of a mixture containing potassium chlorate and any respectable pyro fuel is more than enough to kill you!

any of a number of different things. wasn't anything left really to do any mass spec work, just definitely smelled like potassium chlorate. considering it lifted a 25-ton truck about a foot off the ground, i'd say it wasn't very crappy. in fact i'd say it was pretty ****ing effective, given the lasting health effects it's had.