Author Topic: I wonder... An opinion of sorts.  (Read 220 times)

Alan

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I wonder... An opinion of sorts.
« on: June 08, 2018, 05:29:01 AM »
I wonder if there really is an uniquely, designed suppressor? They all seem to be variations of the 1902 Hiram Maxim's silencer design. If you search around the US Patent Office files, there must be hundreds of different variations, yet all look very similar. Two stand out, however: Ramus Technologies', and OSS Supressors'. The former is used on all Wicked Air Rifles (et. al.?), and the latter mostly by the military.

There is one issue about suppressors which needs to be mentioned. Their ability to "silence" supersonic projectiles is rather limited to about 3dB. The reason is, the projectile itself generates a sonic shock wave outside the weapon much like a plane flying faster than Mach 1. As a result, all the suppressor does (in this case) is quiet the escaping gasses.

At subsonic velocities is where the "uniqueness" of the design stands out. I currently have three PCPs which use suppression. The Marauder uses a shroud, which directs some of the escaping gasses back around the barrel. The remaining gas's velocity is further reduced by baffles similar to Maxim's. The Freedom 202 just uses baffles.

At about 850 FPS, both reduce the sound signature considerably. Increase the velocity to around 950, and both get really loud. Unlike the Maxim design, the Ramus suppressor uses twisted vanes. Its reduction of the sound signature, seems to work well right up to the supersonic transition.

Although much different than the Ramus design, the OSS suppressor also uses vanes to spin the escaping gasses, but in this case, forwardly. At subsonic velocities, their ability to silence the muzzle blast is nothing short of uncanny! A subsonic 22LR isn't any louder than a snap of a finger. And oddly enough, an OSS suppressed 9 mm, sounds almost like the Hollywood version of the silencer.

By the way, the term silencer is a misnomer, but commonly used in place of the more correct term suppressor. Calling it something else, like LDC, shrouds, or moderators, is self-aggradizing in my opinion. This is why using the term silencer within these pages, won't get you banned!


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Alan

I have an Omega compressor. If you're a fellow Guild member, and you pass through Roswell, NM, I'll fill your portable tank as a courtesy.

rsterne

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Re: I wonder... An opinion of sorts.
« Reply #1 on: June 08, 2018, 10:49:03 AM »
Part of the reason for increased report at 950 fps compared to 850 fps is increased muzzle gas pressure.... The closer the projectile is to the muzzle when the valve closes, the higher the pressure and the louder the report that must be supressed.... That is why short barrels and high velocities are so hard to deal with....

Bob
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Alan

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Re: I wonder... An opinion of sorts.
« Reply #2 on: June 08, 2018, 01:37:42 PM »
I'll buy that. The difference is easily 6 dB with the baffle design (Marauder), and about 4 dB with the Ramus (Cobra). I suspect the main reason for that is the internal volume of the "containment can", for lack of a better term.

There is also, of late, a rash of new suppressors on the market for muzzle loaders. I've noticed several at the range, and they seem quiet enough to shoot without hearing protection. But alas, I always wear electronic muffs while at the range, as there is always someone with a S&W .500, or other loudenboomer!
  • Roswell, New Mexico
Alan

I have an Omega compressor. If you're a fellow Guild member, and you pass through Roswell, NM, I'll fill your portable tank as a courtesy.