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Posted: 2/18/2017 5:53:10 PM EDT
At what altitude do they spec? I have never seen anything over 1000ft/sec considered subsonic. Have I got this wrong?
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Posted: 2/18/2017 5:54:06 PM EDT
[#1]
It's metric
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Posted: 2/18/2017 6:04:46 PM EDT
[#2]
They are subsonic here in Virginia.....not exactly match ammo though....and that's out of a cz 455 precision trainer.
...... In fact, I am going to go shoot some now |
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Posted: 2/18/2017 6:16:12 PM EDT
[#3]
1040 ft/second is generally considered to be standard velocity......
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Posted: 2/18/2017 6:16:26 PM EDT
[#4]
The speed of sound is solely a function of air temperature. Decreased air pressure at higher altitudes has no affect on the speed of sound.
Vs = SQRT(1.4*53.34*(T+460)*32.2) Vs = speed of sound in fps, where T is in ºF. |
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Posted: 2/18/2017 6:17:30 PM EDT
[#5]
Maybe out of a pistol?
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Posted: 2/18/2017 6:19:30 PM EDT
[#6]
This chart notes the speed of sound as a function of atmospheric temperature, as well as some velocity vs barrel length relationships for some common ammo.
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Posted: 2/18/2017 6:24:51 PM EDT
[#7]
Quote HistoryQuoted:
1040 ft/second is generally considered to be standard velocity...... This, I think barrel length spec is probably a bigger factor than altitude. 10/22 with 16" tac sol barrel and suppressed, standard velocity stuff is silent, bolt clank is the only noise the gun makes. The high velocity stuff through the same gun doesn't make much of a pop but rips through the air pretty good and is kinda loud. Same suppressor on a buckmark with a 5" barrel is completely silent (slide clank) no matter what velocity ammo I feed it. Longer barrel = faster bullet, to a point |
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Posted: 2/18/2017 6:30:32 PM EDT
[#8]
I thought under 1100 was generally subsonic? Standard Velocity CCI is almost always subsonic from 18" 10/22 around here. Not sure on the muzzle velocity. I think they market it around 1050.
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Posted: 2/18/2017 6:32:44 PM EDT
[#9]
Quote HistoryQuoted:
This chart notes the speed of sound as a function of atmospheric temperature, as well as some velocity vs barrel length relationships for some common ammo. http://i1186.photobucket.com/albums/z362/0471861731/Ballistics/22LR%20Velocity%20vs%20Barrel%20Length%20v2_zpss8mlrevh.jpg Interesting thanks. |
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Posted: 2/18/2017 6:36:15 PM EDT
[#10]
1,126 ft/s is the speed of sound. So ya.
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Posted: 2/18/2017 6:39:22 PM EDT
[#11]
If you want subsonic. The Aquila 22 SSS 60 grains is good stuff. Although I can never find it for a decent price anymore.
Anyone know where to find Aquila 22 SSS 60 grain for a decent price? |
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Posted: 2/18/2017 6:50:47 PM EDT
[#12]
OK, thank you. So as long as I am shooting in sub freezing temperatures, it may be subsonic. This seems pretty dumb to market ammo that wont be subsonic for 99% of people as such. I have some CCI, I think, that is marked subsonic and its in the 750 ft/sec range. This is what I was expecting, it wasnt until I got home and could read the damn fine print did I see the velocity. I bought 2 boxes and the second isnt marked as the first. Hmmm.....
 . I plan to shoot it out of my Pre-17 K22 revolver for in town varmint eradication.
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Posted: 2/18/2017 6:55:03 PM EDT
[#13]
Just as an aside, there is no finer .22 LR ammo than Eley.
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Posted: 2/18/2017 7:03:40 PM EDT
[#14]
Quote HistoryQuoted:
OK, thank you. So as long as I am shooting in sub freezing temperatures, it may be subsonic. This seems pretty dumb to market ammo that wont be subsonic for 99% of people as such. I have some CCI, I think, that is marked subsonic and its in the 750 ft/sec range. This is what I was expecting, it wasnt until I got home and could read the damn fine print did I see the velocity. I bought 2 boxes and the second isnt marked as the first. Hmmm..... . I plan to shoot it out of my Pre-17 K22 revolver for in town varmint eradication.
https://www.AR15.Com/media/mediaFiles/96468/20170218-174838-149241.JPG |
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Posted: 2/18/2017 7:08:32 PM EDT
[#15]
Quote HistoryQuoted:
OK, thank you. So as long as I am shooting in sub freezing temperatures, it may be subsonic. This seems pretty dumb to market ammo that wont be subsonic for 99% of people as such. I have some CCI, I think, that is marked subsonic and its in the 750 ft/sec range. This is what I was expecting, it wasnt until I got home and could read the damn fine print did I see the velocity. I bought 2 boxes and the second isnt marked as the first. Hmmm..... . I plan to shoot it out of my Pre-17 K22 revolver for in town varmint eradication.
https://www.AR15.Com/media/mediaFiles/96468/20170218-174838-149241.JPG I think you are reading the charts wrong, as long as the temp is above -10f 1040fps will be subsonic. |
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Posted: 2/18/2017 7:16:47 PM EDT
[#16]
Quote HistoryQuoted:
Just as an aside, there is no finer .22 LR ammo than Eley. Except for Wolf Match. 
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Posted: 2/18/2017 7:25:24 PM EDT
[#17]
Quote HistoryQuoted:
Please look at the chart I posted. I mean, really look at it. Quote HistoryQuoted:
Quoted:
OK, thank you. So as long as I am shooting in sub freezing temperatures, it may be subsonic. This seems pretty dumb to market ammo that wont be subsonic for 99% of people as such. I have some CCI, I think, that is marked subsonic and its in the 750 ft/sec range. This is what I was expecting, it wasnt until I got home and could read the damn fine print did I see the velocity. I bought 2 boxes and the second isnt marked as the first. Hmmm..... . I plan to shoot it out of my Pre-17 K22 revolver for in town varmint eradication.
https://www.AR15.Com/media/mediaFiles/96468/20170218-174838-149241.JPG |
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Posted: 2/18/2017 7:52:23 PM EDT
[#18]
Quote HistoryQuoted:
Except for Wolf Match. Quote HistoryQuoted:
Quoted:
Just as an aside, there is no finer .22 LR ammo than Eley. Except for Wolf Match. isn't wolf match really rebranded lapua that didn't quite meet lapua's standard? |
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Posted: 2/18/2017 7:53:12 PM EDT
[#19]
Quote HistoryQuoted:
That's cold. nah, even if its warm out it'll still be subsonic.
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Posted: 2/18/2017 7:56:52 PM EDT
[#20]
Quote HistoryQuoted:
isn't wolf match really rebranded lapua that didn't quite meet lapua's standard? Quote HistoryQuoted:
Quoted:
Quoted:
Just as an aside, there is no finer .22 LR ammo than Eley. Except for Wolf Match. isn't wolf match really rebranded lapua that didn't quite meet lapua's standard? It's probably made to whatever specs Wolf ordered. That's just my guess anyway. |
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Posted: 2/18/2017 8:01:04 PM EDT
[#21]
Quote HistoryQuoted:
isn't wolf match really rebranded lapua that didn't quite meet lapua's standard? Nope. It is the same ammo as Lapua. I spoke with one of their reps at SHOT and he told me, "They are the exact same ammo. We load it into Lapua boxes and then we load it into Wolf boxes. It is the same ammo." |
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Posted: 2/18/2017 8:16:25 PM EDT
[#22]
1040 fps is just barely subsonic at 0F.
Between 0 and -10F that speed is supersonic. But, the gunpowder will be affected by the cold and probably not provide that much speed. |
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Posted: 2/18/2017 8:21:26 PM EDT
[#23]
Quote HistoryQuoted:
Please look at the chart I posted. I mean, really look at it. Yep. OK. I get it. My mistake. Thank you. |
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Posted: 2/18/2017 8:45:48 PM EDT
[#24]
Quote HistoryQuoted:
Nope. It is the same ammo as Lapua. I spoke with one of their reps at SHOT and he told me, "They are the exact same ammo. We load it into Lapua boxes and then we load it into Wolf boxes. It is the same ammo." Quote HistoryQuoted:
Quoted:
isn't wolf match really rebranded lapua that didn't quite meet lapua's standard? Nope. It is the same ammo as Lapua. I spoke with one of their reps at SHOT and he told me, "They are the exact same ammo. We load it into Lapua boxes and then we load it into Wolf boxes. It is the same ammo." that's the conversation i misremembered. |
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Posted: 2/18/2017 9:18:52 PM EDT
[#25]
Quote HistoryQuoted:
Except for Wolf Match. Wolf is good, but it's not Eley Tenex or Match EPS.... |
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Posted: 2/18/2017 9:19:42 PM EDT
[#26]
Quote HistoryQuoted:
isn't wolf match really rebranded lapua that didn't quite meet lapua's standard? They make good shit. |
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Posted: 2/18/2017 9:23:43 PM EDT
[#27]
I still have about 6 boxes of the old Subsonic hollow Extra. Love that stuff. Kills critters dead out of my Winchester 69A.
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Posted: 2/18/2017 9:30:25 PM EDT
[#28]
CCI standard velocity is 1070fps. Definitely subsonic even out of a 16" rifle.
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