Thread: Suppressor effectiveness - Think about this!

The sonic "crack" is directionless too so when you miss (when not if ) you get a follow up because the animal doesn't know where to run. at least that is my understanding

450m WTF . Dont understand the point at all of this post....do a test thats means something, 1 m next to the shooter would be interesting

Maybe they meant 450mm, at which point it would all start making sense

Here are a few numbers that may be helpful. Using a BK 2209 meter and 4136 mic calibrated with a BK 4228 Piston phone located 1 meter left of the muzzle and 1.6 meters above the ground.

20" PWS using R1M1 762x51 ammo no muzzle device - 165.68 dB(a) 2660 FPS
Same with can 137.15 2670 FPS

Tested at 50mm from shooters right ear (keep in mind this is a semi with adjustable piston gas)
No muzzle device 156 DB
Can 133.

Full results. About halfway down.

A few other numbers from memory. Brakes add 3 to 5 db over bare muzzle in the direction of ports. If the brake is turned on its side with bottom facing mic, the number is about the same as a bare muzzle.

Its 58 dB at my desk, with everyone gone to lunch... and when I type it goes up to 74 dB... that's with my phone close to the key pad.

Wife goes up 7 db when i dry ammo brass in the oven or turn brass necks in the sink

Originally Posted by 7mmsaum

Wife goes up 7 db when i dry ammo brass in the oven or turn brass necks in the sink

I think your meter is faulty - 7 db's doesn't seem enough

Hahahahahahaha maybe its pain threshold was exceeded

Originally Posted by Tommy

Maybe they meant 450mm, at which point it would all start making sense

50dB at 450mm making sense?

Originally Posted by GravelBen

50dB at 450mm making sense?

Hah! Yeah fair call, ok how about it makes slightly more sense than half a Km

Originally Posted by Tentman

Close - 48, I would have thought it would have been a good bit less than this, anyone care to offer an explanation of why the suppressor didn't make more difference?

The 48dB recorded will also include back ground level noise.


Cheers
Pete

Originally Posted by stretch

-3dB is half. +3dB is double.

+3db is double the Sound Intensity (Acoustic Energy)

+10dB is double the Sound Volume (Perceived Loudness)

60dB is about the level of a normal conversation

Cheers
Pete

Originally Posted by stug

I was recently hunting with my mate when we saw two deer. We got in to about 100m from the deer. My mate was using a suppressed 243, I was using an unsuppressed 7SAUM.
We decided my mate should shoot first, so we would disturb the deer less and have a better chance of getting both. It ended up I shot first. Guess what the second deer did? It just stood and waited about 5-10 seconds for my mate to shoot it.

I once cleaned up a mob of sika with my new suppressor as they milled around. Picked the lead hind then the next biggest etc etc.No way that would have happened with an unsuppressed gun.Many times that has been repeated.Just shows we all have different results.

Do you guys notice a difference between dry and wet surrounding bush / grass? It seems to get louder if it has just rained imo....

Originally Posted by TeRei

I once cleaned up a mob of sika with my new suppressor as they milled around. Picked the lead hind then the next biggest etc etc.No way that would have happened with an unsuppressed gun.Many times that has been repeated.Just shows we all have different results.

Iv seen that with reds and bare muzzel 303s on more than one occasion. Taking out the lead hind is the best way to make it happen. Having shot with both supressed and non suppressed over the years I cant say Iv seen a significant difference. Sometimes they run sometimes they dont. A while a go we shot 2 stags with a braked 280ai and a clean 7mm08, a third stag just stood looking at us while we discussed how much we already had to carry out.maybe a couple of minutes before it left the scene.