Moderators. Fac And Air

[toxo 160]

Hi guys.

 

Can someone tell me the difference between FAC moderators and airgun moderators?

 

Have recently bought a .22LR 1417 and it has a SAK .17hmr moderator on it. Seller says it's fine. Tried it for the first time yesterday and it wasn't that quiet. Seems like there's a rush of air when it's fired. Will test with the mod on/off with my Combro4 but don't know how good they are withh .22lr. Spose it will be ok for a comparison check.

If it's not a good idea to use a .17hmr, can the internals of the SAK be changed to .22?

 

I have a Twink .22 on one of my airguns. Could I use that on the .22lr?

[nasher1 258]

It may say 17hmr moderator on your FAC but SAK are suitable for both calibres, I have just put a new one on my 10/22 and apart from the noise of the action cycling theres no much noise at all, the internal baffles of a SAK are aluminum and even after a few hundred rounds they get seriously crapped up, you have a few choices 1. take apart and clean yourself. 2. Send back to Jackson rifles they will refurb it for you. 3. Go to a gunshop and buy a new one. I use one on my HMR as well and its not too bad on that. atb Roy

[Jax13 251]

sak mods actually work better if they are a bit dirty. only 3 bits so they are dead easy to strip and you can clean them in running water from the hot tap then leave on the radiator to dry.

 

i used one briefly on a hmr and it worked to a point, but to be honest with the crack of the round it didn't make a huge difference (it was noticeable though) when i switched to a .17 specific dm80 mod but the crack is louder than the muzzle blast anyway so its a bit irrelevant.

 

i'm currently using a wmr without anything on the end and to be honestly, because i don't really take more than a shot or two on each field the noise is bearable

 

the problem with using air rifle mods on lr / hmr is that some simply arent built for that sort of pressure and others have pan scourer type material inside which could potentially cause issues.

[Cedric 132]

The SAK should be fine, take it apart and check that the insides are OK and give it a clean.

 

My 1417 with a SAK mod. is very quiet, not as good as my Swift Stumpy but usable.

 

Some air rifle mods. have a fibre filling, not a good idea with a flamable round.

Edited December 19, 2014 by Cedric

[Deker 3,478]

Hi guys.

 

Can someone tell me the difference between FAC moderators and airgun moderators?

 

Have recently bought a .22LR 1417 and it has a SAK .17hmr moderator on it. Seller says it's fine. Tried it for the first time yesterday and it wasn't that quiet. Seems like there's a rush of air when it's fired. Will test with the mod on/off with my Combro4 but don't know how good they are withh .22lr. Spose it will be ok for a comparison check.

If it's not a good idea to use a .17hmr, can the internals of the SAK be changed to .22?

 

I have a Twink .22 on one of my airguns. Could I use that on the .22lr?

 

The difference between a FAC and Airgun moderator can be nothing. There is no specific designated design differences. You need a slot on a FAC for a FAC mod though, you can potentially use any FAC "rated" mod on a non FAC gun (as long as the calibre is compatible) the reverse is not necessarily true, not all airgun mods are suitable for FAC rifles. If the mod is proofed you will need a FAC slot to use it, even if you put it on a 12ft lb air rifle. A SAK with a proof mark is a firearm under UK legislation, that same model SAK with no proof mark is not, but will become a firearm if you put it on a FAC rifle, regardless of whether the SAK has a proof or not!.

 

The SAK is a .22 mod, there are no dedicated internals for a HMR, (the internals are .22) if there were on yours, and you were using it on a .22lr the odds are you would have had an unpleasant event by now! Yours may have a proof for a HMR, that is nothing to do with it being a dedicated HMR mod, they are .22lr mods which can be used on a HMR or a WMR, and according to SAKs own website on a Hornet as well!

 

Twink

http://www.amcustomgunsmiths.com/silencers.html

Says up to 400ft lb

 

Edited December 19, 2014 by Deker

[toxo 160]

Thanks for the replies guys.

Have had em both apart. SAK is solid and proofed. Was slightly gritty so ran it under the tap.

Twink has fiber in it and isn't proofed.

 

What is considered quieter than the SAK for a reasonable budget?

[Cedric 132]

I can't remember the link just now but there is a Youtuibe vid. of a chap testing and reviewing a number of moderators. I've found the SAK quite reasonable on a 10/22 and 1417. Daft question - you are using subsonic ammo?

[toxo 160]

I can't remember the link just now but there is a Youtuibe vid. of a chap testing and reviewing a number of moderators. I've found the SAK quite reasonable on a 10/22 and 1417. Daft question - you are using subsonic ammo?

Yes Cedric. The guy that sold me the rifle said it loves Winny subs. The winny rfd is miles away. Did get a couple of hundred just to make sure before I committed to em. My local rfd only does CCI so I got a hundred of those also but haven't tried them yet. I may yet re-evaluate the SAK. Having just got into this FAC mallarkey I don't have anything to compare it to but I know that once I get everything as right as I can I'm gonna enjoy it a lot.

[Deker 3,478]

Thanks for the replies guys.

Have had em both apart. SAK is solid and proofed. Was slightly gritty so ran it under the tap.

Twink has fiber in it and isn't proofed.

 

What is considered quieter than the SAK for a reasonable budget?

 

This may help a bit but it goes back a while, there are other mods available now!

 

http://www.shootinguk.co.uk/shooting/accessories/sound-moderators-for-22-rimfires-7960

 

The difference between pretty much all of them is marginal just the same, especially if you only use subs!

Edited December 20, 2014 by Deker

[Cedric 132]

Get a buddy to fire the rifle whilst you stand a few yards away, surprising how louder they sound when you are shooting.

 

A point about the 1417, should you decide to buy another mod. be wary about over-barrel ones, some won't fit on the short barrel !

 

PS. You're going to need more ammo ! - and ink for your printer (targets). My 1417 is a beautiful shooting rifle, the only thing I find is not to work the bolt too fast as the bolt can slide over the occasional cartridge and jam into it.

[Tremo 138]

Thanks for the replies guys.

Have had em both apart. SAK is solid and proofed. Was slightly gritty so ran it under the tap.

Twink has fiber in it and isn't proofed.

 

What is considered quieter than the SAK for a reasonable budget?

 

I have a 1417, and I also have a SAK on it. You won't get anything better for the cash. Don't throw away your hard-earned on a high end moddy when you are using subs. For what it will cost, you won't see much of an improvement. By the way, I use Eleys through mine. Accurate.

 

I did originally have a SAK on my 1517 as well. After a while though I decided to change it to a calibre-specific mod, and went for a Swift Nightingale. I was never going to get rid of the crack, but I must admit the new mod does quieten the blast considerably.

[Cedric 132]

I had a Swift Nightingale on my .17hmr and it was considerably better than a SAK. When I bought a .22 Hornet I just bought a different baffle and converted it to .22. The Hornet is a noisy little bugger still !

[toxo 160]

Thanks again guys. I now know a bit more about moderators than I did before. The SAK wil be OK while I have a think and a bit more play. After dismantling the SAK I was surprised to feel the impressions of the holes quite deeply in the side wall of the mod and I'm thinking what if those holes were filled with some rolled up steel gauze or similar. Or I might have a play with the Twink and replace the felt with something more substantial. Can't help myself, love a project me.

 

Cedric: I did get a buddy to fire it whilst I listened. That's when I heard the rush of air as it was fired but I guess you're going to get that even with no mod at all.

And yes. Gonna need more ammo that's for sure and the bit about the bolt is duly noted.

 

Dekers: Thanks for the links. As usual you went the extra mile and it's appreciated.

 

Want to ask bout a zero question but doesn't seem right here. I'll start a new thread.

[Cedric 132]

The bit about impressions in the wall of the mod is quite strange, never seen that before.

 

Could it have been corrosion or pehaps someone has shot a powerful centrefire through it ? The holes in the baffle are not filled when new.