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Posted: 6/18/2010 10:01:25 PM EDT
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We tested the SPR with the Ops can a couple days ago. I know there has been a lot of controversy surrounding how do they meter compared to results on their website.
The 18" SPR meters over 170 with the muzzle brake and that is how the guns are tested- an unsuppressed reference is compared to a suppressed signature. Our meter doesn't go over 170 so we can't say how high it was except that it pegged a meter at 170. Obviously the muzzle brake makes the weapon signature louder so it would probably meter around 164.5 without the brake but we didn't test that combination. With the can on, the combination metered 132 with 75 grain hunting shack ammo. We'd have had 77grain if the hunting shack had shipped the ammo we ordered, but they didn't. At the right ear it tested 141.5 which is better than a lot of silencers. The silencer really has a phenomenal sound. The FRP was -.5DB in the string we tested. I was sitting next to the muzzle of the can, spotting rounds with a pair of 18x cannon image stabilized binoculars and the sound was kind of comfortable. I should have been behind the firer but I was tired, it was a long day in the sun and we'd probably drank too many beers 
The meter is a pretty good indication of performance but the sound is still something that has to be heard to be appreciated. Ron who makes the suppressors is a really nice guy which is a plus. You get to put your hands on a suppressor with real historical value in the sense that history has been made with weapons mounting the devices and that's another cool thing about Ops cans. |
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There has been a lot of controversy surrounding how meters are used to get the DB numbers
some claim. Along with what meter is used, has the meter been tested and certified, has the operater been tested and certified. I can go get a meter at radioshack and post numbers all day that will be better than yours. position of the mic will have a big affect along with shooting under a roof, in a enclosed area, in the desert with no tree's, in the woods with lots of tree's, high grass or low grass at the range, in the rain or snowing and is there snow on the ground. Was the host a single shot/bolt action ,semi, was the barrel 26 inches or 12" Many things will change DB readings for the better or worse. The best way to meter a can is to go to some silencer shoots and hear them for yourself as thats what I do before any can purchase. A ops can on one host may sound loud on another just like any other can. |
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Quoted:
There has been a lot of controversy surrounding how meters are used to get the DB numbers some claim. Along with what meter is used, has the meter been tested and certified, has the operater been tested and certified. I can go get a meter at radioshack and post numbers all day that will be better than yours. position of the mic will have a big affect along with shooting under a roof, in a enclosed area, in the desert with no tree's, in the woods with lots of tree's, high grass or low grass at the range, in the rain or snowing and is there snow on the ground. Was the host a single shot/bolt action ,semi, was the barrel 26 inches or 12" Many things will change DB readings for the better or worse. The best way to meter a can is to go to some silencer shoots and hear them for yourself as thats what I do before any can purchase. A ops can on one host may sound loud on another just like any other can. What's your point? He was simply posting what he did with his bud. It wasn't a sales pitch. It wasn't even his can. I bet you're one of those people who "listen in" to a conversation and then give your opinions when they were not solicited. Anyone who has slightly looked into Db ratings knows there are many variables so you are right but you come off as rude and unsolicited. Thanks GA for the post. Just my $.02 |
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Quoted:
Quoted:
There has been a lot of controversy surrounding how meters are used to get the DB numbers some claim. Along with what meter is used, has the meter been tested and certified, has the operater been tested and certified. I can go get a meter at radioshack and post numbers all day that will be better than yours. position of the mic will have a big affect along with shooting under a roof, in a enclosed area, in the desert with no tree's, in the woods with lots of tree's, high grass or low grass at the range, in the rain or snowing and is there snow on the ground. Was the host a single shot/bolt action ,semi, was the barrel 26 inches or 12" Many things will change DB readings for the better or worse. The best way to meter a can is to go to some silencer shoots and hear them for yourself as that's what I do before any can purchase. A ops can on one host may sound loud on another just like any other can. What's your point? He was simply posting what he did with his bud. It wasn't a sales pitch. It wasn't even his can. I bet you're one of those people who "listen in" to a conversation and then give your opinions when they were not solicited. Anyone who has slightly looked into Db ratings knows there are many variables so you are right but you come off as rude and unsolicited. Thanks GA for the post. Just my $.02 His post starts out (Metered an SPR with Ops can) not I drank beer with my bud. Did you read his post before the edit ? Words on the net don't always come across the way they are intended just like when I read yours it sounds like you are kissing butt and assume everyone knows about the variables with DB readings. I bet your one of those people that look for the negative things more than the positive in life and think most people are looking for a fight. 
But most likely your a good guy and my english sucks and came across as harsh to you 
I did not dump on GA All I did was explain how many things can affect DB readings and go to silencer shoots to hear the cans. |
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Quoted:
Quoted:
Quoted:
There has been a lot of controversy surrounding how meters are used to get the DB numbers some claim. Along with what meter is used, has the meter been tested and certified, has the operater been tested and certified. I can go get a meter at radioshack and post numbers all day that will be better than yours. position of the mic will have a big affect along with shooting under a roof, in a enclosed area, in the desert with no tree's, in the woods with lots of tree's, high grass or low grass at the range, in the rain or snowing and is there snow on the ground. Was the host a single shot/bolt action ,semi, was the barrel 26 inches or 12" Many things will change DB readings for the better or worse. The best way to meter a can is to go to some silencer shoots and hear them for yourself as that's what I do before any can purchase. A ops can on one host may sound loud on another just like any other can. What's your point? He was simply posting what he did with his bud. It wasn't a sales pitch. It wasn't even his can. I bet you're one of those people who "listen in" to a conversation and then give your opinions when they were not solicited. Anyone who has slightly looked into Db ratings knows there are many variables so you are right but you come off as rude and unsolicited. Thanks GA for the post. Just my $.02 His post starts out (Metered an SPR with Ops can) not I drank beer with my bud. Did you read his post before the edit ? Words on the net don't always come across the way they are intended just like when I read yours it sounds like you are kissing butt and assume everyone knows about the variables with DB readings. I bet your one of those people that look for the negative things more than the positive in life and think most people are looking for a fight.
But most likely your a good guy and my english sucks and came across as harsh to you
I did not dump on GA All I did was explain how many things can affect DB readings and go to silencer shoots to hear the cans. Okay, I do assume sound is a pretty familiar thing to all of us (deaf not included) and that sound (pressure) levels are common sense. Maybe I give too much credit. I could've misread your text with a negative undertone and if I did, my bad, sorry. I commented on how it sounded to me. I thought he did something most of us can't do and shared the info w/ us free of charge (we can't say all do that). I guess when I read what seemed to be the opposite of a thank you (read: ungrateful) the undertone crept in. I am a pretty positive guy and that's why I was bugged by what I preceived as a comment made with no appreciation for the FREE info given. I could see if J. Titsworth was selling his info without the current mil standards being used during his test but this was a guy who said here's some info, do what you will with it. Silly how the lack of body language screws up communication so bad. I guess I agree with you that Db testing on an official capacity is semi-tricky if one doesn't know what they're doing. Good day sir. |
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Good talking to you Austin. Here is some more data. This was with my BK2209. In calibration using the standard Mil test procedure. Rifle is a 19" barrelled Rem 700(bolt gun) shooting BHA 55gr FMG.
Just some quick 5 shot strings all taken within about 15 minutes. 12th Mod .22 cal w/brake. 133, 134, 132.5, 132.5, 133. w/ flash hider 135.5, 134.5, 133.5, 133.5, 135. 16th mod .22 cal w/brake (New suppressor) 137, 135, 133, 134, 134.5, 134.5. 15th model .22 cal w/brake 139, 139.5, 137.5, 140, 140. 14th model .22 cal w/ brake. (new suppressor) 142, 140.5, 142, 139.5, 140.5 Just fyi. Ron |
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I just picked up my Ops 12th model Tuesday, and put about 30 rounds through it today, a mix of Black Hills 69gr BTHP match, some Armscor 75gr BTHP, and some Atlanta Arms 77gr BTHP AMU.
It is quieter than my Surefire 556-212. It has a nice sound to it. I'm very content with my purchase/choice and look forward to acquiring another Ops can in the future. |
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tag Quoted:
Good talking to you Austin. Here is some more data. This was with my BK2209. In calibration using the standard Mil test procedure. Rifle is a 19" barrelled Rem 700(bolt gun) shooting BHA 55gr FMG. Just some quick 5 shot strings all taken within about 15 minutes. 12th Mod .22 cal w/brake. 133, 134, 132.5, 132.5, 133. w/ flash hider 135.5, 134.5, 133.5, 133.5, 135. 16th mod .22 cal w/brake (New suppressor) 137, 135, 133, 134, 134.5, 134.5. 15th model .22 cal w/brake 139, 139.5, 137.5, 140, 140. 14th model .22 cal w/ brake. (new suppressor) 142, 140.5, 142, 139.5, 140.5 Just fyi. Ron Posted Via AR15.Com Mobile |
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Just curious - what type of meter are you using for these measurements? I was using a B&K 2209 meter with a 1/4" microphone. We tested unsuppressed on a 10.5" gun on the same day at 168DB. I know lack of an appropriate unsuppressed figure isn't desirable, but I don't know if the meter is capable of measuring sounds over 170DB because that is out of the range on the dial. The Ops 12th model on the 18" SPR remains the best 5.56mm suppressor I've heard. It is worth every penny in my opinion. I've run into a lot of people who don't know that Ops Inc exists and I think that's too bad, because the company makes a great product and has made it for a very long time. Ron didn't mention it, but I think you'll find that suppressors on gas operated weapons will meter 1-2 DB better (MilStd 1meter left) |
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