Shooterjgs
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All I could find today
- Thread starter blazzinbird
- Start date
On the two pictures I posted, CCI Standard Velocity and Quiet-22, neither say the words subsonic...but they both are subsonic velocity.
Boz
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Sub sonic, not sub sonic, etc. For someone like myself who is trying to learn, I'm not wrapping my head around the important differences. Right now my supply is all Federal bulk, the 550 and the 525 stuff, seems to work okay in my 15-22. I might be able to get some of these.
CCI 22 LR Tactical Bullets, 375-Count:
They say they are optimized for the AR-22 platform. Should these work okay in the 15-22 or should I pass?- Optimized for reliable function in AR-22 platforms
- Copper-plated round-nose target bullets
- Superior accuracy
- 1200 FPS
- 40 grain
Freeway
US Veteran
Those will be fine and will likely run very well in a S&W M&P 15-22.
As far as subsonic versus supersonic, the main issue is noise (supersonic crack you get with supersonic ammo) and possible slight accuracy issue with supersonic if shot at longer ranges. It's not an issue for most people, in particular when plinking. Match target shooting and maybe varmint hunting is where it would matter most to most people.
Subsonic means no supersonice crack, and when suppressed there isn't as loud of a muzzle report. This makes a .22 very quiet, similar to a pellet gun, maybe even quieter. An accurate, quiet, long distance round for varmints is likely desireable when hunting.
Subsonic also means no transonic change, that is going from supersonic to subsonic speed. For example (fake numbers ahead), starting out at 1200 fps the bullet would be supersonic, but after a bit, say 50 yards, it might only be going 1000 fps due to air resistance, etc. When it crosses under the supersonic speed the shockwave from having gone supersonic in the first place can catch up to the bullet and destabilize it slightly, making it less accurate. If it never goes supersonic it will never get that destabilization. If you are shooting at a distance that the supersonic bullet hits it's target before it goes subsonic, the shockwave wouldn't catch up and wouldn't affect the bullet. For a barely supersonic round (~1200 fps) that might be 10-25yards...I don't really know, that number is just made up, but that limits the accuracy slightly to within that range. I you used an ultra high velocity round (~1600 fps), you might get out to 50-75 yards before it slows enough to be affected by going subsonic.
Those numbers above are made up by me, but that should be the gist of it. Hopefully it makes some kind of sense.
