Some outrageous amount anyway
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Some outrageous amount anyway
Ill do some asking in regards to the fella that has it
Via a 3rd party so I don't know how much of any info etc ill get directly
They haven't been tested so I can't give you an honest answer. I tried to get this bloke from the states to test them since he is independent and appears to know what he is doing but getting them into the states is very difficult. Here is a db reference guide from that site to give you some ideas.
I wouldn't get too hung up on the numbers and wouldn't use any numbers for comparison between brands unless they were all done on the same day at the same range on the same guns. Factors that will effect testing include; ammunition, barrel length, rifle action (bolt action or gas operated) reflection of nearby structures or trees or terrain, temp, humidity, cloud cover and height, location of test rig (standard is 1.5 meters up and 1m to the left side of barrel and at the shooters ear). Design factors can tailor a suppressor to the rifle since you don't need to worry about over gassing on bolt guns.
I doubt there is more than 7 db difference between most suppressors (loudest to quietest) that are on supersonic rifles since the crack is the primary noise and cannot be suppressed. That is where you get into other reasons for selection like weight, strength, longevity, cost , barrel overlap and length past the end of muzzle. The best thing is to try out a couple of different cans and see what you like. I try to create all the things in a suppressor that I want for shooting and I am sure the other manufacturers do as well. Different people want different things and anything that is designed is a compromise among the various factors.
I plan on testing a 762 at awakeri this weekend and will bring a 556 to try it on that for a comparison of how much louder the 556 is from a 762 can. Other people will have to give you their objective impression of the sound. Someone can film it too, as long as I am not in the picture! :D
Take a read through this article. It is one of the most comprehensive writeups I have seen and will give you a very good overview on what suppressors will do for supersonic rifles. Sound Suppressors on High Powered Rifles
I can finally answer this honestly for the 556 version at least.
Here is the first independent test of one of our cans. It is the first production model 556-45 and was metered by a manufacturer in Canada.
Rifle: 14.5" M4
Ammo: American Eagle 62gr
Sound Meter: B&K 2209 / 4136 mic
Test Protocol consistent with Mil Std 1474D as described by Phil Dater and Al Paulson. (Silencer History and Performance Vol 1, pg 85)
Raw Data: 140.1, 135.8, 137.0, 135.0, 136.7, 137.2, 136.4, 136.0, 138.3, 136.7
Avg SPL: 136.9 dB (hearing safe is 140 dB)
FRP: +4.3 dB
Thanks for sending it to me, it is a very neat piece. I applaud your willingness to let the data be public. Too many designers won't share real data or try to cover up or obfuscate data that isn't great. You have done a good job with a very short can. For comparison sake I looked up my data on the BR Tuote Reflex Suppressors and yours did virtually the same SPL as those, which are def longer than yours.
Here is the link to the thread. You will have to log in.
Also, how are your QD cans coming along?
So almost 30dB suppression? That is pretty good.
I have a good db meter at work and have done some testing on rimfire - the results are interesting as design is more important that size also a few drops of oil can make a 5-6 db change
also
Attachment 15981
Drool. Can't wait for mine
Got a photo of the borelok to go with?
UK.
I have a couple of borelocks at customs , SL7s & a jetz , will post pics when they get to me .