60 gr subsonic .22 ammo, .22 SHORT cases

[awright]

https://ammoseek.com/rimfire-ammo/-60grains-

https://www.youtube.com/results?search_query=aguila+.22lr+sniper+subsonic+60-gr+review+

[awright]

this ammo is expensive, hard to find and is not for routine practice. It's used thru a silencer, so you dont get the "sonic crack" that normal .22 ammo has from a rifle barrel, cause it's breaking the sound barrier. That crack is almost as loud an an un-suppressed .22 rifle. You also need to know to hold-shut the bolt of the .22lr with your non-firing hand. This is if one shot is going to suffice, cause a bit of noise comes out of the ejection port of an autoloader, along with the empty casing

[awright]

it feeds fine from box mags, but some guns rifling twists wont stabilize it at longer ranges. I tried it from a 6 3/4" 2245 Ruger and 1022, at 25 yds and groups were typical of plinker ammo. I had only iron shots, didn't have a lot of time for precise shooting, but got 2" groups with the pistol and 1" with the rifle, just a shot every couple of seconds, using the sitting braced firing position for the pistol and normal sitting for the rifle, iron sights on both.

Works best with the 1 in 9" rifling in most AR15 barrels. Normal .22lr rifling rate of twist is 1 full turn in 16". The longer the bullet is, the faster it needs to be spun in order for it to fly true, and not keyhole, flopping end over end in flight.

[awright]

because the 60 gr bullet is so long, it could not be loaded into normal .22lr cases and still fit in box mags. So it's loaded into .22 short cases. A stroke of genius on the part of somebody! Normal weight .22 bullets, when held to 1000 fps from a rifle barrel, often wont reliably cycle autoloading actions. So the heavy bullet, with its greater recoil impulse is an advantage. The 60 gr is 950 fps from a rifle, no advantage from pistol barrels, less than 6" in length over normal ammo, cause such shots are subsonic anyway. Normal 22 ammo is 1250 fps from a rifle barrel, while the speed of sound is 1050=1100 fps, depending upon temps, humidity, and elevation above sea level. Shot to shot velocity in guns varies a bit in speed. So, if you want to assure that no shots give sonic crack thru a silencer, you hold the average velocity to 1000 fps. This 60 gr bullet offers the same 120 ft lbs of power as a normal .22lr load, making it able to pierce the temple at 50m on deer or men, or on cattle to 20m.

[awright]

Federal offers a 45 gr subsonic load, which many claim reliably cycles the autoloaders. I've not tried it as of yet.

[bearintex]

CCI standards run 1020 FPS out of my MP15-22 and cycle the action every time. No need for the fancy stuff.

[texaspyro21]

Be careful running the 60gr through a suppressor. A lot of 22s don’t have a fast enough twist to stabilize the 60gr and could cause baffle strikes. Some suppressors even come with warnings about that specific round.

[ahlongslide]

I built two 22s specifically for that round with 1:8 barrels. No baffle strikes yet, but I did have a dud round make it halfway down the barrel.
The bolt action build is insanely quiet with that ammo and a SiCo warlock. By far the loudest noise is the firing pin hitting the rim.
It’s what I recommend to anyone who has a 22 conversion kit for their AR. Basically, it turns it into a subsonic 223

Oh, the SSS rounds smell bad when fired. Kinda like the elephant exhibit smell.

[-HIC-]

this ammo is expensive, hard to find and is not for routine practice. It's used thru a silencer, so you dont get the "sonic crack" that normal .22 ammo has from a rifle barrel, cause it's breaking the sound barrier. That crack is almost as loud an an un-suppressed .22 rifle. You also need to know to hold-shut the bolt of the .22lr with your non-firing hand. This is if one shot is going to suffice, cause a bit of noise comes out of the ejection port of an autoloader, along with the empty casing

Are you serious?

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[awright]

Are you serious?

Sent from my SM-J727T using Tapatalk

of course. What's your problem? If you get your thumb solidly against the bolt, not letting it get a running start on you, it wont move at all.

[awright]

CCI standards run 1020 FPS out of my MP15-22 and cycle the action every time. No need for the fancy stuff.

you're lucky, cause that's not true with a lot of .22lr autorifles. Most have to either have the bolt and/or recoil spring lightened a bit, and over the long run, that can cause problems if you shoot a lot of the normal.22lr ammo.

[awright]

Be careful running the 60gr through a suppressor. A lot of 22s don’t have a fast enough twist to stabilize the 60gr and could cause baffle strikes. Some suppressors even come with warnings about that specific round.

if you know how, you can make very durable, effective .22 baffles in a minute each, and have them buried someplace. Replacing them is easy, normally. Just remove the front endcap and fire a shot. The expanding powder gases will push most of the baffles out of the can. Those that dont come out, you can make a buttonhook out of a hunk of drill rod and use it to tease out the remaining baffles. I keep the can squirted with WD-40 As much as possible. This keeps the carbon much more likely to be blown out or burned up. When you have to pull out baffles, a shot of WD all around the interior before the extraction is attempted, will make the job a lot easier.

Silencer makers want you to believe that you need thousands of $ invested in a CNC lathe to make good baffles, but it just aint so. Even centerfire rifle baffles only take a couple of minutes each to make, once you've made the "tool kit" for the job. Making that kit takes about a couple of hours, tops and requires access to a lathe for much of that time. But you can sell a LOT of those kits amd once you've got the tool-kit made, you can make baffles all day long, every day, if you want.. :-)

[bearintex]

you're lucky, cause that's not true with a lot of .22lr autorifles. Most have to either have the bolt and/or recoil spring lightened a bit, and over the long run, that can cause problems if you shoot a lot of the normal.22lr ammo.

Never had an issue on a dozen or so rifles. Marlin 60’s, MP15-22, 10-22, even an old nylon 66. Never a single modification. Pistols as well.

[bearintex]

Hmmm, break any other federal laws lately?

[Brazos Hunter]

Never had an issue on a dozen or so rifles. Marlin 60’s, MP15-22, 10-22, even an old nylon 66. Never a single modification. Pistols as well.

This. I have never had one single problem with standard velocity ammunition.

Why pay 4-6x as much for ammunition when you do not have to?


Michael


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