foosball&firearms
Member
- Joined
- Sep 15, 2015
- Messages
- 11
This silencer is looking like a no-brainer to me. Has anybody had their hands on one ?
For how long now?? And where is the holdup? Is it because of the amount of people applying?Still waiting for mine.
I wish people would stop using the term "hearing safe" to describe any silencer under 140dB. This is a deliberately misleading term that silencer manufacturers use, and it's a misrepresentation of the rules for noise exposure. When you fire your 450 Bushmaster with your SilencerCo Hybrid and you don't use hearing protection, you're permanently damaging your hearing over time.rb288 said:The 450 bushmaster is a loud beast anyway but the hybrid does get it hearing safe, below 140db, and it is much more pleasant to shot with it.
http://american-hearing.org/disorders/noise-induced-hearing-loss/Habitual exposure to noise above 85 dB will cause a gradual hearing loss in a significant number of individuals, and louder noises will accelerate this damage. For unprotected ears, the allowed exposure time decreases by one half for each 5 dB increase in the average noise level. For instance, exposure is limited to 8 hours per day at 90 dB, 4 hours per day at 95 dB, and 2 hours per day at 100 dB. The highest permissible noise exposure for the unprotected ear is 115 dB for 15 minutes per day. Any noise above 140 dB is not permitted.
[...]
Combined use [of ear plugs and muffs] should be considered when noise exceeds 105 dB. Note that for such situations, it may be that there is no type of hearing protection that will stop a very loud noise from affecting you.
Don't worry, I'm not confusing the two. I'll readily admit that there is a difference. My point is simply that a silencer isn't medically "hearing safe"; all silencers produce dB levels that are high enough to cause permanent hearing loss. The question is simply how much shooting is required to cause measurable damage. It's probably fairly quick if you're shooting a suppressed centerfire rifle. But you'd probably have to do a heck of a lot of shooting with a suppressed .22 to cause noticeable hearing loss.Hyrulejedi86 said:I think your mistaking sustained vs instantaneous (impulsive or impact) decibels.
Sustained Db over 85 is more damaging than instantaneous decibels of 140 and below.
My point is that claiming a sound in the 130 dB range is "hearing safe" is simply untrue. Sounds at that level can and do cause permanent hearing loss. The 140 dB level is simply the maximum allowed noise level. That doesn't mean that anything below that is perfectly safe and can't cause damage.Hyrulejedi86 said:In your example of 90 db, it states for 8 hours (a typical work day). However, OSHA standards for instantaneous sounds of 140 and below are considered hearing safe. This is what all the manufacturers are basing their "Hearing Safe" claims on.
https://www.osha.gov/pls/oshaweb/owa...E#1910.95(b)(1)
In this link what you posted is present however so is this quote:
"Exposure to impulsive or impact noise should not exceed 140 dB peak sound pressure level."
First, finding one. Now waiting on the transfer to the dealer. So we haven't even submitted a Form 4 yet.For how long now?? And where is the holdup? Is it because of the amount of people applying?