Heavy Bullet Subsonic Rounds

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Heavy Bullet Subsonic Rounds

Post by rich.tullo on Sun Mar 13, 2016 6:28 pm

Anyone try them for Bullseye I don't know if there is any advantage but I don't know there is no advantage? 


http://www.americanrifleman.org/articles/2016/1/29/winchester-announces-m-22-subsonic-rimfire-ammo/

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Re: Heavy Bullet Subsonic Rounds

Post by Wobbley on Sun Mar 13, 2016 6:47 pm

I've shot some Fiocchi.  Nothing special.

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Re: Heavy Bullet Subsonic Rounds

Post by LenV on Sun Mar 13, 2016 7:02 pm

Practically everything we shoot in .22 for Bullseye is subsonic. The speed of sound varies with temp, humidity, barometric pressure etc. But it is usually figured at around 1125 fps. If you shoot SV then you are already shooting subsonic rounds.

Len

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Re: Heavy Bullet Subsonic Rounds

Post by Fire Escape on Sun Mar 13, 2016 11:58 pm

I believe that the CCI Subsonics that I looked at were around 800 fps. They were double the cost of standard velocity so I did not get any to test.

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Re: Heavy Bullet Subsonic Rounds

Post by Wile E Coyote on Mon Mar 14, 2016 12:45 pm

No advantage over SV for most applications. Since it's a heavier bullet, 45 gr, going 1090 fps, there is more muzzle energy compared to SV. More muzzle energy = more felt recoil. While it's not a huge difference it is greater. But it might help those automatics that have difficulty digesting SV ammo while still maintaining subsonic velocities.

                     Velocity Energy
                       FPS      ft/lb
M22 Subsonic  1090      119
CCI                1070      102
Eley Club        1085      104.9
Aguila Target  1080      104

(Manufacturers' posted data)

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Re: Heavy Bullet Subsonic Rounds

Post by C.Perkins on Mon Mar 14, 2016 6:42 pm

Just to let you know;
Legal .22 ammo is 40 grains max. as per the NRA rule book the last time I looked.

Clarence

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Re: Heavy Bullet Subsonic Rounds

Post by LenV on Mon Mar 14, 2016 6:59 pm

C.Perkins wrote:Just to let you know;
Legal .22 ammo is 40 grains max. as per the NRA rule book the last time I looked.

Clarence

That's the way I remember it also. But, I looked last night and again just now and can not find that in the rules anymore. They might have changed it or forgot to put it in there. I was going to mention that last night and quote the regulation. As hard as ammo is to find they may be changing the rules (again). The CMP still has the 40gr limit ( 6.5.2)

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Re: Heavy Bullet Subsonic Rounds

Post by C.Perkins on Mon Mar 14, 2016 7:42 pm

Well; I just found this.
Looks like 3.4(a) says it is okay now.

http://rulebooks.nra.org/documents/pdf/compete/rules/rul_precision_pistol_15.pdf

Clarence

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Re: Heavy Bullet Subsonic Rounds

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