I shoot them in my backyard with my CZ bolt rifle...sound like someone clapping their hands....very quiet.

I don't know what the heck is $61 for 200 rounds but I usually pay near that for a brick (500) of high quality target ammo (Lapua or RWS). It is also subsonic but not marketed as "quiet".
Target ammo will be subsonic but that is usually 1200 fps or so, not 700.
As a bullet slows from supersonic to subsonic it encounters turbulence and this affects accuracy hence the reason target .22 ammo is all 1200 fps (at the muzzle) or thereabouts.

If you want the quiet factor you're probably better off with an air gun rather than spend crazy money on .22 ammo.

Not sure where he got that price from...

Cabelas.ca lists them:

.22 LR Subsonic (40 gr.) HP (100) $8.99

34125 .22 LR Quiet (40 gr.) LRN (50) $4.99

I think that bullet drop of the .22 short vs the .22 LR wasn't much overall up to even 100 yards. (see chart in weapons stats download http://internationalpreppersnetwork.net/viewtopic.php?f=76&t=5049 ). The major difference is the impact is 52 ft lbs vs 75 ft lbs. This means that the .22 short could kill lots of bigger things up close that a pellet gun wouldn't, up to including a deer. Now the benefit of not bringing an army to your location is bonus enough to maybe even keep a few boxes kicking around....the downfall is that they are so short that most magazines won't feed them into a barrel and no semi -auto will have enough blowback power to eject them. This narrows their usefulness to single shot weapons and 22 revolvers. Those custom loads that the US have which shoot a heavier lead in the short subsonic class are interesting, but I never see them on a shelf anywhere and are likely pricey anyways.

Check out the story about Bella Twin and the Grizzly she killed with a .22.

http://www.marlinowners.com/forum/general-gun-related-off-topic-stuff/12459-bella-twin-her-22-caliber-world-record-grizz.html

Doesn't it really come down to 'bullet placement'?

So no real life application is what I'm getting... Other than quiet target practice? I thought maybe it would be powerful enough as a small animal pest control. I think I miss understood how many were in a box for 61.00 There were 400 rounds and they were 22 Long not short. Just couldn't understand the draw towards them as being popular. I bought the 1240 ft pr sec for my Savage target riffle, 525 rounds for 31.00

I don't think I'd want to come up against a Grizzly with a 22...lol Maybe 12 gauge lead slug and offset every other round with 9 mm !!

So no real life application is what I'm getting... Other than quiet target practice? I thought maybe it would be powerful enough as a small animal pest control. I think I miss understood how many were in a box for 61.00 There were 400 rounds and they were 22 Long not short. Just couldn't understand the draw towards them as being popular. I bought the 1240 ft pr sec for my Savage target riffle, 525 rounds for 31.00

I don't think I'd want to come up against a Grizzly with a 22...lol Maybe 12 gauge lead slug and offset every other round with 9 mm !!

I would rather not face a grizzly with anything but an 8mmM or .308 that I can drop them long, long, long before they're inside slug range, me personally. Bears is quick.

As to application:
Subsonic .22LR/Short rounds are in the 40gr range, sometimes down to 28-36 range. Aguila makes a honey SSS in 60gr.
A .22 cal air gun pellet is going to be roughly 12-18 gr, most typically in the 13-14-15 range here.
At a certain point, you hit the .223/5.56 vs. .309/7.62 arena when it comes to projectile size and weight, and the powder and velocity behind them. You've already got discussion on this site about how much power is needed to take a deer or coyote, what calibers are appropriate to use, it's just something to consider.

Your subsonics .22 come in ranges of about 700-800-950 fps.
At 800-900(+) fps, your .22 air guns are manufactured and marketed AS a small game hunting rifle. Stoeger and some others want you to buy a 1000-1200+ fps .22 pellet gun to take rabbits, but they also want you to buy a .22 pellet gun to take squirrel and crow. Anyone who has hunted with a .17 will be able to debate that.

The subsonics are certainly more limited in range than a standard velocity .22. Instead of big rabbits, foxes, or some others at 75-80-100 with a mini mag, 50 with a standard, yes, you're looking more at 25 or so, using a 7" bbl revolver with fixed scope.
My preferred woods/verge air rifle is limited to the 25-30 yard ranges for rabbit.

Then you have the fps issue itself. With some give in temperature, humidity, and elevation, the sound barrier hits that "crack" around 1120.
Now, no .22 rimfire or airgun is ever going to sound like my favorite 7.62 brush gun, or my .22-250 for that matter, in terms of "boom" or distance that boom carries or even the sharpness of the round that tells somebody I'm varmint or small game hunting, not pig hunting.
But there is a crack-crack with my high-velocity, non-silenced air gun.
Somebody else mentioned clapping hands. Yeah, that's what it sounds like with a good subsonic. And that's about as far as it carries.

As far as firearm types...
With a pellet gun you're largely looking at PCP, break action or pump guns to reach hunting levels. Most CO2 guns don't have the velocity. Some PCP guns are muti-shot.
Subsonic .22 rimfires can be fired out of revolvers, lever-action SB carbines, and bolt-action SB carbines.
If it has less than a 16-20" barrel, there are subsonics for it.
Some subsonics say they are pistol only because if a rifle has tight grooves, primer-only subsonics may not have sufficient power to actually leave a rifle barrel.

I prefer the revolver, because I can go Josey Wales style with my revolver - a cylinder with the subsonics in for squirrels in the woods, birds and hares on the verge, and a cylinder of standard/hunting WMR 22 for groundhogs and prairie dogs and such that are farther out than I'm comfortable with. One little bar and I can quietly and quickly switch between them.
When I take that WMR shot, though, I'm going to have a longer area where people know I was hunting and at least found something, and around here even small game figures out what gunshots are and go to ground. Clapping my hands not only alerts fewer people, it alerts a smaller pool of game.

While I've spent a great deal of time defending the subsonic (and do have a place for it in my house and bag, for its benefits) I am also a huge fan of air guns, particularly for pest and small game hunting.
Due to the affordability, ease of casting reloads, ease of care, and fewer restrictions (here in the U.S.) I consider them an excellent tool. There are several posts where they've been discussed, as the primary topic, in hunting, as gift ideas, or as part of favorite ugly guns lists.
Search "pellet gun" or "air gun" because we sometimes (regularly) use them interchangeably, along with "air rifle" and "pellet rifle".

Thank you MrsPrepwpets that helps...I am new to firearms so you guys will have to bear with me. I am just so used to shooting my .22 long target with reg 1240-1500 ft pr sec ammo. I only starting to learn about reloading.
I discovered very quickly that I would need to figure it all out when I had to shell out 3.00 a round for my 338. Owch! Now I have also bought a target 308 and look forward to making my own rounds for that riffle as well.
You would think I would be a little more savvy when it comes to firearms as my parents were collectors of firearms and came across the boarder in 1972 with 2600 firearms...

2600!!! Wow! I bet they had some cool stuff.

Thank you MrsPrepwpets that helps...I am new to firearms so you guys will have to bear with me. I am just so used to shooting my .22 long target with reg 1240-1500 ft pr sec ammo. I only starting to learn about reloading.
I discovered very quickly that I would need to figure it all out when I had to shell out 3.00 a round for my 338. Owch! Now I have also bought a target 308 and look forward to making my own rounds for that riffle as well.
You would think I would be a little more savvy when it comes to firearms as my parents were collectors of firearms and came across the boarder in 1972 with 2600 firearms...

and they say hoarding is a bad thing..... 😆

My favorite was the civil war gatling gun..Hand crank. Old school. The original "Crankin on it" lol

I am new to firearms so you guys will have to bear with me.

Glad it helped (even with the major typo that probably had several scratching their heads or writing me off -- still there).
By and large, it's not really caliber or firearm type that makes a difference in most applications. It's ammo type and shot placement.

Lots of topics already here, but feel free to ask questions. Most of us are friendly types. You'll also find you'll get conflicting answers from various people. Frustrating, but also worthwhile periodically.

Heya Blackknight88

Nothing like reloading your own. Start saving that brass, and grab all the powder you can find.

I've been saving the 338 brass.. trying to get into reload mode but can only back order powder from Cabelas in Vancouver. Once paid for, who knows how long it will be on the back order list. Ammo is more abundant now though at least.