How loud is a .22 rifle with subsonic ammo?

I am a legal NFA suppressor owner and use subsonic ammo all the time.

Your neighbors are definitly going to hear it!! Subsonic ammo is just as loud as normal 22 ammo - if you had a sound pressure meter you would notice the subsonic being about 2% quieter - but - this is not enough for the human ear to tell the difference. They are going to hear it.

Subsonic ammo does not change the blast noise of the rifle going off - it only limits the bullet speed to under 1050fps and prevents the usual ballistic crack.

Hope this helps.

Ok, so in a very general sense .22LR ammo falls into these categories: 1) Subsonic: Generally means less than or right at 1,050 FPS. Most often this is some sort of specialty target ammo, as slower velocity ammo is generally considered to be more accurate. So, for example if you have a Pardini SP you are likely to use stuff like this. There is the noted exception of the Aguila 60 grain subsonic hunting ammo which basically is just a very hard hitting short range ammo. In many semi - autos this stuff will not function well. However, the 622, in it's day was targeted as an sort of mid grade target pistol. Something better than the budget Rugers, but not as expensive as the 41. So, it may run with subsonic and may be very accurate in it. The gun has a good reputation for accuracy. 2) Standard: Generally means 1,050 to less than 1,200. This is your run of the mill .22 ammo. The 622 should run this and it will be fine in it. 3) High Velocity: Generally, this is where you get to supersonic, 1100 - 1250 fps. A really narrow band and I think probably just advertising. Again, should be fine in your gun. 4) HyperVelocity: Here is where you have to be a bit careful - so this is typically 1,300+ So, light bullets, that are high velocity. Remington Vipers, Federal Game - Shok are the low end here. In an older gun or if the springs are worn you can bottom the slide out with these - at the high end these can be very fast - CCI Stingers at 1735 FPS, etc. These are about twice the energy of a standard velocity round typically, the rounds at the high end of this range you have to be a bit careful with. Stingers, for example, are actually loaded a bit long, and some guns won't feed them correctly or seat them correctly in the breach. So, to start with I would stay with something around the 1100 - 1200 FPS range. CCI Blazer, CCI Standard Velocity (a better grade), Winchester Dynapoints, Federal AutoMatch, any of those are going to be good options to try out with. If you feel the gun bottoming out (it's noticeable) you probably need new springs. Thinkingblade

depends. the only two type I have is Remington Subsonic, which sounds like a door being slammed amplified by a loud speaker, and CCI CB Long/Short Which out the loudest sounds like a high pitched pop. if fired outside its sounds like a loud click.

As long as you don't have nosy, tree hugger anti gun liberals with the CCI type of subsonic ammo you'll be ok.

If you live in a more rural area (that's when your neighbors can't see into your house because they're that close) in a house on a larger lot around 1-2 acres, using Remington subsonic may be ok. fire a few rounds and see what happens.

You can always act like you're building something in the backyard (like a dog house or something) and if the cops come you can claim that you were using a nail gun or hammering away way too loudly.

CCI CB will not cycle a semiauto like Ruger 10/22, it will need to be manually cycled.

Remington Subsonic will reliably cycle a semiauto like the 10/22.

the longer the barrel of the rifle the quieter the shot is. For example, my 24" long barrel marlin 935 rifle is very quiet compared to the 16-1/4" barrel of the Ruger 10/22. Longer barrels also give the bullets a higher muzzle velocity as well as more accuracy.

22 Subsonic Rounds

Actually, I don't think so. I think your neighbors are definitely going to hear it! Subsonic ammo is being about 2% quieter than normal .22 ammo. But this doesn't make difference to human ear. So be careful when using .22 rifle with subsonic ammo.

I don't think .22 Subsonic ammo in a bolt action rifle is much noisier than a powerful air rifle. That's just my opinion. I have a decibel meter maybe I should do a little test.

Yes,most subsonic ammo is very quiet and some of it is more accurate than standard ammo,sometimes achieving 1\4in groups a 100 yds.

Its not going to be loud, but your neighbors will still be able to hear it even if they are a good distance away. More to the point, if you live in an urban area (city/town/village/suburbs) its probably illegal to discharge a firearm inside the city limits.

Even in a 9mm pistol its noticeable quieter with a suppresor when compared to regular ammo.

With a .22 its quite a bit more silent.

(i heard some people say it was alot quieter, and other people said they barely noticed a difference......)

No. You need to be at least 100 yards away to not notice.