Fn fiveseven subsonic

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Seems as though some here don't own any live stock or have driven up on the remains of a chicken massacre the next day and had to kill sixty of them that weren't dead yet. And still not get to eat any of them.
One hundred and ten dead just to take and eat two. That doesn't sound like a balanced nature thing to me.

Acme hasn't done enough to thin coyote numbers. My kids need to eat too.

Upon relating your ideas to me, @748, I have given up on my plan of a rimfire upper set up for the Aguila SuperSubSonics.

This seems a much preferable option. Mostly the ammunition customization, as putting in more or less powder is easier than tuning springs and conversion adapters and finding portless barrels in the wanted twist.

I know very little about the suppressor side of it. I suppose a rimfire can would burst. Would one that works for Two Twenty Three work the same?

Good luck with the hunt.
 
5.7x28 out of a rifle should be fine in a can that can take 22wmr from a pistol or 22hornet from a long gun.
Any 556 or 223 can would be overkill.
Full power 223 is like 25gr to 28gr of boom.
With subsonic 5.7 you are only talking about 5gr of propellant. Full power is around 7gr.

An auto loader that shoots Aguila subs sounds tricky.
 
"An auto loader that shoots Aguila subs sounds tricky."
But oh... if you could get it to work, wouldn't that be dandy?

I admit at first a sub-sonic 5.7 sounds like a contradiction, but since you are already set up for 5.7 it sounds like good sense. What is your max practical range with it?
 
That Kel Tec .22 mag pistol with something like a 30 round capacity sounds better for your intended purpose, to me, but the FN would definitely be more glamorous.
 
Seems as though some here don't own any live stock or have driven up on the remains of a chicken massacre the next day and had to kill sixty of them that weren't dead yet. And still not get to eat any of them.
One hundred and ten dead just to take and eat two. That doesn't sound like a balanced nature thing to me.

Acme hasn't done enough to thin coyote numbers. My kids need to eat too.

Good luck with the hunt.

Agreed, but I try my best for a quick death.

The silencerco Spectre is rated for 5.7
 
Me, too.

I am a fan of the Fifty Grain Throat Punch.
(Or how ever many grains is in a twelve gauge #4:)...)

But to say a sub-sonic 5.7 is inhumane, is a stretch. Especially if he is moving up from a rimfire pistol.

I still think it would be cool to have boxes of dynamite left about, but I can’t trust the coyotes to blow themselves up. (And my kiddos not to.) Perhaps relocated Roadrunners could help...:D
 
Hornady states 1600fps is the lower limit for explosive expansion.

Whether that means it will not open at all at sub speed is going to need testing. It could mean they just don’t disintegrate completely, which is what I look for in a varmint bullet.
I have a feeling they will work even if they act as a FMJ. I haven’t had very many hollow pointed rimfire bullets act as hollow-points and open up anyway.
 
Hornady states 1600fps is the lower limit for explosive expansion.

Whether that means it will not open at all at sub speed is going to need testing. It could mean they just don’t disintegrate completely, which is what I look for in a varmint bullet.
I have a feeling they will work even if they act as a FMJ. I haven’t had very many hollow pointed rimfire bullets act as hollow-points and open up anyway.
Nearly every time I look at a .22 hollowpoint I wonder "Is this really going to work?"
 
Neighbor found a dead coyote near his house with several extremely fresh looking small caliber gun shot wounds less than 1/4 mile from where I shot one.
The suppressed ruger is quite lethal.

Below around 1,600 to 1,700fps ballistic tip .224 bullets don't really break up much and fmj bullets tend to stay in 1 or 2 pieces.
So subsonic they might as well be FMJs.

For hollow point 22lr they do open up when fired at roughly supersonic velocity such as from a rifle, even lead round nose will mushroom out at those speeds.
 
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Poking around on the 5.7 forum it looks like the 62gr bullets fired subsonic from a 1:8 twist barrel are so on the edge of instability that the blast and turbulence inside the can makes the bullets key hole.
But they are fine with out the can.
Looks like 55gr will do the same thing, near minimum charge around 1,000fps out of a pistol they are fine with no can, screw the can on and they keyhole. But bump the charge up about 1gr and get them near super sonic and they come out of the can and fly straight every time.
55gr bullets will cycle the pistol.
That would have driven me mad to make a nice 62gr sub load that works great, load up a bunch of them, just to have them keyhole when I put the can on.
 
After reading various 5.7x28mm subsonic posts and reading how m193 bullets are stable at 1,100fps but tumble at say 800 to 900fps.
I figured I should plug the numbers into a ballistic calculator to we if they're stable.
Apparently nothing almost nothing 22cal is considered "stable" unless you have a 1 in 7 twist barrel. It's like almost all your 22cal stuff operates on the edge of flying sideways.
So if I can get any Spitzer bullet to fly straight and subsonic out of a can it's going to do all it can to cut a coyote in half when it hits.
Might need to find the highest bc 55gr bullet I can and try that.
 
What are your current 5.7x28 loads. Do you feel you have mastered standard velocity 40gr loads pretty well? I always heard 5.7x28 was finikey to reload... my boss could never get his reloads to feed as reliably as factory loads even though he took great care to not remove the outer coating on the brass.

If you have basic 5.7x28 loads down you probably know more about loading 5.7x28 than most all on this forum. Good luck with your project!!
 
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They work as long as I don't load anything too weird as far a bullets and load them to near full power.
The only ones I had trouble with was 32gr gold dots. My first test batch I loaded them too light.
I'm sure loading subs will give me some problems. I'm pretty sure I avoided most of those problems by abandoning the M855 idea and sticking with M193 or match HPs.
 
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