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Old 09-19-2012, 04:03 PM   #11 (permalink)
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1. Long barrel with mucho porting, its not the material but the paint fit and porting that reduces sound. My DW was loud compaired to my Dye Ultralite bot at 14 inches.
2. Springing for lower pressure = less pop when valve is opened by the hammer
3. Springing to reduce the possible hammer bounce, some call this "farting"

These things have always quited my markers down. Last month someone playing next to me mention he didn't think I was firing right next to him until he saw the paint
hit a bunker.
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Old 09-19-2012, 04:43 PM   #12 (permalink)
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My cocker bodied pump with stock valve and light springs iss very quiet with an eigenbarrel. At low pressures the sound of the hammer hitting the valve was louder than the barrel report... And keep in mind that what you're hearing at the gun may not be what people are hearing twenty feet away.
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Old 09-19-2012, 04:44 PM   #13 (permalink)
Sorry, that's classified.
 
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You really wanna be a silent assassin? Barrel tag 'em. Waste not, want not. Quietest marker evar.
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Old 09-19-2012, 11:07 PM   #14 (permalink)
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here is what i am doing.

-not holding the pump handle/hitmen mod
-lower pressure/higher volume (i have my midblock stock valve/midblock hammer with madmann sear/ccm mainspring running at 200psi)
-barrel with a long control bore and lots of porting after that (eigenbarrel, flasc, tightstick, shaft4/fuse)
-a good paint to barrel fit with some underboring (allows you to run lower pressure, backed out IVG)
-longer barrels as mann's barrel test showed that there roughly is a 1dB decrease every 2 inches of barrel length.
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Old 09-19-2012, 11:10 PM   #15 (permalink)
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what kind of efficiency do you get gospeedgo1?
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Old 09-20-2012, 12:03 AM   #16 (permalink)
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not sure, last weekend was the first time using that spring and pressure combo. i run a 45/4500 so i do not really look at my gauge much.
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Old 09-20-2012, 12:17 AM   #17 (permalink)
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I shot my DW vs. a .688 dye back with a whoosh front and the whoosh front was much quieter! Really, unscrewing the rain cover and just shooting the whoosh front w/o the rain cover was almost as quiet!

The whoosh does make my R7 front heavy.
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Old 09-21-2012, 10:27 AM   #18 (permalink)
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Springing, barrel, ect. Most of it has been touched upon already.

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The deadlywind barrels are very quiet. The quietest pump setup I have ever heard was a thumper with a deadlywind null on it.
I used to run my thumper with my 14" deadlywind, midgame I'd swap it for a CCM sizer instead so the thing sounded like a ****ing cannon instead of what everyone heard in the chrono range.
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Old 09-21-2012, 03:32 PM   #19 (permalink)
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not sure, last weekend was the first time using that spring and pressure combo. i run a 45/4500 so i do not really look at my gauge much.
yes, I'm a stickler, but with CA it really doesn't matter much (although I do like to pump everything I out of my 4oz tanks, pun intended)
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Old 09-21-2012, 04:33 PM   #20 (permalink)
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What spring combinations are you guys using?
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