Home Forums Hunting & Shooting Rimfires What's the quietest subsonic?

I bought a bunch of CB's (longs and shorts) several years ago and the shorts are clearly louder in the same firearm. Since most of the above disagree with me, then I must have a 'lot' of shorts with extra primer

Nah, my CB shorts are also louder. Out of the same firearms, and by more than a smidge

I'd have to trust someone to tell me...I can't hear the difference.

CB longs are what I prefer for neighborhood squirrel control..quite. about 525 fps out of my CZ

I have been shooting the CCI "Quite-22" for a few years out of a CZ 452 Lux. With the long barrel, the neighbors can't here it standing in the yard. The repeatable accuracy is excellent. Zeroed at 40 yards for the local squirrel population. 1/4 to 3/8 inch group with a 4-14 Burris rimfire. Head shots out of the kitchen window are routine. You must know the trajectory well. At 710 fps, they drop quick.

CCI CB short has 0.5 gr of powder, the max that can be silenced with 24" of 22 rifle barrel.

The CB short is BB gun quiet if it hit something soft, like a raccoon's head.





The CB short is noisy if it hits something hard, like plywood.

The CB short is faster than the CB long for the same amount of powder and noise. That is because of the higher pressure and expansion ratio.

The CB short is noisier if it hits something hard, because the bullet is faster.

Two other points in favor of the Quiet 22s is that they're available pretty often and they feed just like a long rifle in a manual repeater and won't leave a crud ring in the chamber like a short.

Okay, three things.

I"ve killed so much with super colibri, out to about 30 yards, I don't know why you'd look further. But you didn't want even colibri.

Subs and a can are the way to go.

Thats if CCI ever makes 0074 ever again...

In 1976 took EE360 Acoustics from professor Rubens Sigelman, at that time a pioneer in ultrasound.
I have worked for a couple ultrasound companies.
In 1996 I was into Remington CB Longs.
I asked on the early internet, "Why is the CB Long so quiet in a 24" barrel and so loud in a 22" barrel?"
The late gunsmith Randy Ketchum said to me, "The difference is the pressure threshold of supersonic gas escapement from behind the bullet."
I knew he was right.
I now know that a CB short can make more velocity with the same noise as a CB Long, because of the increased peak pressure and expansion ratio.
But the CB short has a longer jump to the lands and was getting poor accuracy.
Then ~ 2 years ago CCI started making 22 CB shorts that are accurate. The packaging looks the same.



With coons I like to go for the brain shot with CB shorts and 24" barrels.
But if they are way up in a tall tree, it takes 5 good body hits to bring them down.
My brother kills skunks and coons with CB shorts from a revolver. It has some super sonic gas, but he says he does not need ear plugs.

I just got a couple boxes of quiet 22 from cci, and compared it to normal high velocity rounds.... it certainly was no more than 1/3rd of the "bang" of the high velocity.

Funny thing was, I then shot a few rounds at a 100 yard target, to see what would happen...
It was hilarious...

Took about a full second to travel the hundred yards and landed about 3 feet lower than a high velocity round.

I guess this stuff will work well, but will require some additional Kentucky windage skills I don't currently possess.

What....?, can you speak a little louder? You don't have to yell!

My only experience with SS is CCI Quiet 40gr. It shot very well at 25 yards from my Kimber Huntsman. Shot dead center 5 shots almost one hole about 1.25" lower than Win PP 40 (old) one hole 5 shot group. Bought 2 boxes to try out but haven't seen any since.

Travis has obviously not tried CB shorts from a 24" or longer barrel.
The difference between that an CCI Quiet is ~ 50 DB.

When I worked audio for Boeing in 1977, my boss subscribed to DB Magazine. I know what DB means.