Svemko Nano 1.0 moderator experience

[WildBoarHunter]

Hi,
I have one of the above ordered for my 20 inch 308 win as a light alternative for stalking and driven hunting. It's light and short and won't change the balance of the rifle much. Does anyone have any experience how well it dampens the rifle report? I'm always using active muffs when shooting even when using a moderator.

 

[wytonpjs]

Interesting.......... I have no personal experience of the Svemko mods but comparing manufacture's data for sound reduction is always going to be risky (time Ed repeated his excellent moderator review please ).

From the Nano's manufacturer's site I see it claims a 21-24 dB reduction. I currently use a Freyr & Devik FW149 (149 gr) on my .243 and .270, and a UTS231 (231 gr) all titanium mod on my 20" Sako and Tikka .308s. The FW149 gives a stated reduction of 27-29 dB and, remembering that a dB is a doubling, that's (on paper) is substantially more attenuation that the Nano. Moreover, as well as being lighter, it's also an inch shorter and IMHO a lot nicer profile. However, having had a F&D FW196 gas-cut on me (replaced with the UTS231), if I was to be buying another cheaper mod (the F&D's are cheaper than the Svenko) I'd go for the F&D UTS131 for a stalking mod. It's half an inch longer than the Nano, fractionally smaller at its widest (it tapers much more) but claims a reduction of 29-31 dB.

Without directly comparable trials just going by manufacturer's reduction figures is risky but, as a F&D user of both the FW149 and UTS231 mods for stalking (as well as an Oceania Defence Alpine Hunter and 3 Evos for range work), I stalk without hearing protection with my mods without issue. For range work, the Peltor EP100s go in!

 

[308rws]

Interesting.......... I have no personal experience of the Svemko mods but comparing manufacture's data for sound reduction is always going to be risky (time Ed repeated his excellent moderator review please ).

From the Nano's manufacturer's site I see it claims a 21-24 dB reduction. I currently use a Freyr & Devik FW149 (149 gr) on my .243 and .270, and a UTS231 (231 gr) all titanium mod on my 20" Sako and Tikka .308s. The FW149 gives a stated reduction of 27-29 dB and, remembering that a dB is a doubling, that's (on paper) is substantially more attenuation that the Nano. Moreover, as well as being lighter, it's also an inch shorter and IMHO a lot nicer profile. However, having had a F&D FW196 gas-cut on me (replaced with the UTS231), if I was to be buying another cheaper mod (the F&D's are cheaper than the Svenko) I'd go for the F&D UTS131 for a stalking mod. It's half an inch longer than the Nano, fractionally smaller at its widest (it tapers much more) but claims a reduction of 29-31 dB.

Without directly comparable trials just going by manufacturer's reduction figures is risky but, as a F&D user of both the FW149 and UTS231 mods for stalking (as well as an Oceania Defence Alpine Hunter and 3 Evos for range work), I stalk without hearing protection with my mods without issue. For range work, the Peltor EP100s go in!

Wise words!

 

[Worzel_]

How much is the svemko and is there a dealer in the UK?

 

[wytonpjs]

How much is the svemko and is there a dealer in the UK?

https://www.edgarbrothers.com/brands/svemko-hunter-1-0-series/?srsltid=AfmBOoqeFTUkYS749LAhZr5FfYcyjjsoi5kaD0F25F1wJMCweH0mZnF_

 

[jcalleja91]

Andy Simpson at Precision Shooting Store used a Svemko at the NRL Hunter match.. give him a shout and I'm sure he can answer questions/order them in for anyone

 

[WildBoarHunter]

In Frankonia moderator test from 04 / 2021 is was claimed that F&D 149 achieved 17.74 db reduction with the first shot and 20.22 db with second shot. The caliber they tested it with was 308 win with 20 barrel.
I'm not comfortable with a F&D right now as some people claim issues with them.

 

[wytonpjs]

In Frankonia moderator test from 04 / 2021 is was claimed that F&D 149 achieved 17.74 db reduction with the first shot and 20.22 db with second shot. The caliber they tested it with was 308 win with 20 barrel.
I'm not comfortable with a F&D right now as some people claim issues with them.

There are indeed issues with some of the older F&D FW moderators but they are consumables IMHO (as I have posted on here before) and I have pictures of at least half a dozen other manufacturer's mods going bang. I have some sympathy with the manufacturers here in so far as if they specify a cleaning regime will users follow it? Moreover, barrels and fired rounds vary significantly and some users may not be getting 100% powder burn in the barrel so the mod is going to experience a different regime than perhaps it was designed to accommodate. I use both the old F&D technology (as stated I had gas-cutting in a FW196 but found it by cleaning before it went catastrophic). I also have their new titanium 3D-printed moderators which are non-strippable so from here on with these, we do have to take it on faith that they are serviceable and safe. The same is also true of other manufacturers Ti mods.

Back to the OP's post - there are a number of mod reviews out there doing side by side noise tests but those I have seen/saved are sadly dated. It would be good to have a new baseline report established so that noise is better quantified mod to mod, although, the buyer will also be trading off weight, size, shape, etc in their overall purchase decision.

 

[Tralle]

.... and, remembering that a dB is a doubling, that's (on paper) is substantially more attenuation .....

Just to nitpick a little.

A 3dB (A) rise is a doubling in sound energy.

You will need around 8-10 dB for a human to experience the sound as doubled.

 

[wytonpjs]

Just to nitpick a little.

A 3dB (A) rise is a doubling in sound energy.

You will need around 8-10 dB for a human to experience the sound as doubled.

I stand corrected however:

Decibels increase exponentially​

'A 10 db increase means​

Decibels are measured logarithmically. This is a way of counting or measuring something that increases rapidly, or exponentially. For example, every increase of 10 dB on the decibel scale is equal to a 10-fold increase in sound pressure level (SPL). Near silence is expressed as 0 dB but a sound measured at 10 dB is actually 10 times louder. If a sound is 20 dB, that's 100 times louder than near silence.