This is a "Spooky" 17 Caliber Carbon Fiber moderator. The internals are gyroid printed PETG.
This moderator performs best at muzzle energies between 15 and 40 foot pounds.
$45.00 to your door.
Specs:
Length: 100mm (~4 in)
Diameter: 24mm (~1 in)
Weight: 1.15 oz (33 grams)
1/2 x 20 UNF stainless helicoil
Audio was recorded of the bare rifle and the rifle with the moderator.
Here is that sound sample repeated three times.
The microphone is about ten feet further from the bullet trap than it is from the rifle muzzle. The sound of the pellet striking the trap is much louder than the rifle.
Analysis in "Audacity" shows that the net reduction is 11 decibels. That is a net reduction in detectable range of about 350%.
This chart explains that claim:
This moderator performs best at muzzle energies between 15 and 40 foot pounds.
$45.00 to your door.
Specs:
Length: 100mm (~4 in)
Diameter: 24mm (~1 in)
Weight: 1.15 oz (33 grams)
1/2 x 20 UNF stainless helicoil
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Audio was recorded of the bare rifle and the rifle with the moderator.
Here is that sound sample repeated three times.
The microphone is about ten feet further from the bullet trap than it is from the rifle muzzle. The sound of the pellet striking the trap is much louder than the rifle.
Analysis in "Audacity" shows that the net reduction is 11 decibels. That is a net reduction in detectable range of about 350%.
This chart explains that claim:
| Bare rifle is barely audible at (yards) | Rifle with moderator is barely audible (same direction under the same conditions) |
| 500 yards | ~145 yards |
| 400 yards | ~115 yards |
| 300 yards | ~85 yards |
| 200 yards | ~60 yards |
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