CCI Sub Sonic 22 LR HP Ammo

6mm06

6mm06

Well-known member
Yesterday evening I did a bit of testing with a Ruger 77/22 paddle stock rifle. My main purpose was to test some new ammo I got recently, CCI Sub Sonic lead HPs. I have read that although they are sub sonic, that they have a high degree of accuracy. My tests revealed just that with a good 5-shot group at 25 yards. First I shot 10 rounds of my usual load for the 22 rimfires - Federal bulk pack 36 gr. jacketed HP. The sub sonics actually held their own and in my mind, surpassed the Federals in accuracy.

As to being sub sonic, there is still a crack since they are supposedly traveling at 1,050 fps, but the sound is much quieter than the Federals. I am wondering what a suppressed rifle shooting these would sound like. Has anyone tried these rounds in a suppressed rifle? If so, please share your thoughts.

The sub sonic group is on the left and the Federal jacketed HP on the right.


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I don't shoot sub-sonic but do shoot the standard velocity and they shoot extremely well. My Savage HB shoots them in very small groups at 50 yds.
 
Get a rimfire hollow point tool and make hollow points out of any .22lr you want, even Eley Tenex or CCI SV or Wolf Match Target and yes they expand on squirrels.

Here's a review I did a while ago on the D Rock tool.
https://www.google.com/amp/s/www.rimfirecentral.com/forums/showthread.php%3ft=345231&amp=1
 

The main reason I wanted to try the sub sonics was to lessen the sound. Accuracy is important, and so many sub sonics don't have it. These CCI's are definitely accurate and produce less noise than the high velocity rounds that are 200 fps faster, though still a very noticeable sound.

I am hoping someone chimes in who has tried these rounds in a suppressed rifle.
 


I have a browning lever 22. I like CB "Long" caps they shoot okay.
I shoot ground hog and coons around the house.
It makes less noise that my air rifle.
 
Get yourself a 2 liter bottle of Coke, some ice and a bottle of J.D.
That will affect your accuracy somewhat but should answer your questions.
 
Originally Posted By: 6mm06
The main reason I wanted to try the sub sonics was to lessen the sound. Accuracy is important, and so many sub sonics don't have it. These CCI's are definitely accurate and produce less noise than the high velocity rounds that are 200 fps faster, though still a very noticeable sound.

I am hoping someone chimes in who has tried these rounds in a suppressed rifle.

Interesting that you have found that many subsonic .22 Long Rifle rounds aren't accurate. I've shot Eley, Winchester, CCI, SK, RWS and Remington subsonic rounds through a variety of rifles and overall my impression is that it's easier to find an accurate subsonic round for a rifle than a high velocity one. In fact, Eley and the older truncated hollow point Winchester have been extremely consistent and accurate, while the Remington has been consistently inaccurate across the board. The CCI has always been "ok" in my rifles. Rimfires being somewhat finicky about ammo the only way to know what shoots best is to shoot groups with as many different offerings as possible. On another note, since subsonic and standard velocity is pretty much the same velocity the report from a suppressor would be about the same. I know you are rifle savvy and know all of that, I just found your observation about inaccuracy with subsonic ammo very interesting.
 
Originally Posted By: 6mm06
The main reason I wanted to try the sub sonics was to lessen the sound. Accuracy is important, and so many sub sonics don't have it. These CCI's are definitely accurate and produce less noise than the high velocity rounds that are 200 fps faster, though still a very noticeable sound.

I am hoping someone chimes in who has tried these rounds in a suppressed rifle.

ive run them in my 10/22 suppressed. I've got a nylon bolt stop installed, so that helps with the action noise, and like mentioned other than that the loudest noise is the *THWAP* when they hit the target.

my barrel does ok with these, but not spectacular - i get quarter sized groups @ 50 yds with them. Personally ive gotten the best results with Remington HP Subs & Norma's. I prefer the norma's as they burn cleaner and give a little touch of advantage over the Remmy's for accuracy.

When i shoot critters at night with the norma's (coons, opossum) i pick with eyeball i'm gonna put out. Light em up and aim for the shine and wait for one to go dark.
 
It's been several years since I shot sub sonic ammo. As I remember it was Remington brand and something else, just don't remember exactly. I never got decent enough groups to use them with confidence. These CCI's seem to work pretty good from my 77/22. Haven't tried them yet in the 10/22. Maybe I need to try some other rounds too.
 


Standard velocity CCI long rifles are 1070 fps your subs are 1050 fps.
That is only 20 fps difference.
Standard's are what I shoot in my match rifles, Small bore indoor.
My CB long's are 710 fps.
 
Originally Posted By: 6mm06It's been several years since I shot sub sonic ammo. As I remember it was Remington brand and something else, just don't remember exactly. I never got decent enough groups to use them with confidence. These CCI's seem to work pretty good from my 77/22. Haven't tried them yet in the 10/22. Maybe I need to try some other rounds too.

i did an ammo test in my cousins 10/22 last summer, primarily subs, but also a couple super loads. his has an ER Shaw barrel on it, mine has an A&B. i was doing it as much to goof around as to convince him that new production CCI Minimags are [beeep] compared to pre-ammo shortage production. the guy he bought the gun from fed him a load of manure that it "only" liked 36gr hp minimags and nothing else would run in it well.

needless to say i blew that nonsense clean out of the water, but hes still shooting minimags because he's got like 8 or 10k of them to go thru.

it sure opened his eyes to federal automatch though - this is a 5 shot group @ 50 yds under that dime. i had two out of the 5 groups i shot that were like that, and the others were still respectable - and better than the best group with the minimags by a respectable margin.

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Originally Posted By: willy1947

Standard velocity CCI long rifles are 1070 fps your subs are 1050 fps.
That is only 20 fps difference.
Standard's are what I shoot in my match rifles, Small bore indoor.
My CB long's are 710 fps.




ya but sometimes that 20 FPS can really make a difference. this is why it pays to test multiple brands and product lines - especailly when playing with rimfire stuff.
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The point is the 20 fps makes no noise difference. I mentioned that already and I think that is what willy1947 is getting at.
 
The sound is still not as quiet as slower rounds. I know the 1050 fps is just on the edge of sub sonic.

Has anyone tried slower rounds that provide good accuracy?
 
I agree that the new crop of CCI Mini-mags seem lacking.

I shoot CCI CB longs at stuff in the yard, you really have to judge range and adjust aim on longer shots. They are quiet though !
 
Originally Posted By: 6mm06The sound is still not as quiet as slower rounds. I know the 1050 fps is just on the edge of sub sonic.

Actually, 1050fps can be supersonic or subsonic, depending on conditions. The air density, which we measure by using temperature, effectively changes the supersonic barrier. When it's cold, the speed required to go supersonic is drastically lower. You can easily have a projectile travelling at 1025fps break the sound barrier in the north winters. Yet in the summertime it's very possible for a projectile at 1150fps to still be subsonic.

Another factor is bore length, configuration and condition. Just because it says 1050 on the box, doesn't mean it's actually coming out of your specific barrel at 1050.

Also remember that just because you're not technically breaking the sound barrier if you're close to it, the closer you get to it, the louder the report of the projectile travelling through the atmosphere will be. So, for a full time, 100% subsonic in any normal condition, you'll want to stay at 950fps or slower.
 


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