.223 AR-15 recoil vs. 9mm AR-15? - Page 3
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.223 AR-15 recoil vs. 9mm AR-15?


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Old 10-06-2011, 03:32 PM   #21
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Probably not much of a difference, but consider this....

9mm Ammo is most likely going to remain cheaper
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Old 10-06-2011, 03:56 PM   #22
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Quote:
Originally Posted by chachaseeds View Post
Which caliber do you guys think recoils more/ has more muzzle rise?
Was there a perceived purpose to this, or was it just intellectual curiosity?

Because the rounds do different things, different caliber,etc?
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Old 10-06-2011, 08:15 PM   #23
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Quote:
Originally Posted by therewolf View Post
Was there a perceived purpose to this, or was it just intellectual curiosity?

Because the rounds do different things, different caliber,etc?
I was just trying to find some of the advantages of an 9mm ar15 compared to a .223 ar15 in terms of combat effectiveness. Apparently, one of the key advantages to the 9mm ar is that it's more controllable than the .223. However, I've heard people say that the 9mm ar recoil MORE that the .223 version. This is just intellectual curiosity.
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Old 10-06-2011, 08:24 PM   #24
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haha, I found this video of an 8 year old shooting the 9mm and .223 ar15. Looked like the .223 had MUCH more muzzle rise, at least to this kid, but then the 9mm has a suppressor. Bottom line, I think the .223 definitely has more muzzle flip, but then the 9mm's blowback action can increased percieved recoil dramatically for some people... I bet you guys are probably wondering "what the hell is the point of this thread?????? Niether have any real recoil to begin with!!!"

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Old 10-12-2011, 05:14 AM   #25
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I'm wondering why you're comparing apples to oranges,

and how unwise a choice of weapons platform based

merely upon recoil characteristics will be.

.223 is more accurate, has better penetration, a flatter

trajectory and better general overall utility.

9mm, barring very limited circumstances, could be a

poor choice, depending upon usage needs.

But it's your money. I guess, in a few weeks,

if you decided you wasted a wad

of it making a poor choice based upon useless criteria,

that's your problem, OP.
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Old 10-12-2011, 08:10 PM   #26
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Quote:
Originally Posted by therewolf View Post
I'm wondering why you're comparing apples to oranges,

and how unwise a choice of weapons platform based

merely upon recoil characteristics will be.

.223 is more accurate, has better penetration, a flatter

trajectory and better general overall utility.

9mm, barring very limited circumstances, could be a

poor choice, depending upon usage needs.

But it's your money. I guess, in a few weeks,

if you decided you wasted a wad

of it making a poor choice based upon useless criteria,

that's your problem, OP.
I do not understand why you are assuming that I am choosing a weapons platform merely based on recoil. I am aware that this comparison is apples vs. oranges, an intermediate rifle round vs. a pistol caliber round, but I recall that the title of this thread is 9mm vs .223 RECOIL, not 9mm vs. .223 combat effectiveness or whatnot. I asked this specific question out of pure intellectual curiosity, not because I was trying to determine which platform was better, or rather which platform to purchase. I mentioned in an earlier post that I was trying to find some of the advantages of an 9mm ar15 compared to a .223 ar15 in terms of combat effectiveness. Maybe that's where you got the idea that I am making a stupid judgement? If that is the case, I never mentioned that recoil is the sole determining factor in choosing which weapons platform is superior... Again, I am totally at a loss of why you assumed that I am choosing a weapons platform because of its recoil characteristics. As for me buying a gun for myself, I am in no position to do so for the foreseeable future, because I am only 16 and haven't lost my gun virginity yet. That's right - I have never shot before. This thread (and my participation in this forum) is just a part of my intellectual curiosity. If it offends you, then please feel free to ignore it.

Last edited by chachaseeds; 10-12-2011 at 08:20 PM.
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Old 10-12-2011, 10:01 PM   #27
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I have this in an Excel spreadsheet, PM me your email address if you want a copy.
Rifle mass, bullet mass and muzzle velocity have the greatest effect on recoil.
I used a heavy 9mm bullet mass, and a typical .223 bullet mass.

9mm Recoil Data
6.0 WG = Weight of gun in pounds
147 WB = Weight of bullet in grains
4.7 WP = Weight of powder charge in grains
1000 VB = Muzzle velocity of bullet in f/s
0.74 I = Interim number (Recoil Impulse in lb/sec)
4.0 VG = Recoil velocity of gun (f/s)
1.5 EG = Recoil energy of gun (ft-lb)

4000 NV = Nominal velocity of gases, accepted at 4000 or 4700 for
modern smokeless powders, use 2000 for black powder.

I = [(WB * VB) + (WP * NV)] / 225218
0.74 pounds per second

VG = 32.2 * (I / WG)
4.0 feet per second

EG = (WG * VG * VG) / 64.4
1.5 foot pounds


223 Recoil Data
6.0 WG = Weight of gun in pounds
55 WB = Weight of bullet in grains
27 WP = Weight of powder charge in grains
3220 VB = Muzzle velocity of bullet in f/s
1.27 I = Interim number (Recoil Impulse in lb/sec)
6.8 VG = Recoil velocity of gun (f/s)
4.3 EG = Recoil energy of gun (ft-lb)

4000 NV = Nominal velocity of gases, accepted at 4000 or 4700 for
modern smokeless powders, use 2000 for black powder.

I = [(WB * VB) + (WP * NV)] / 225218
1.27 pounds per second

VG = 32.2 * (I / WG)
6.8 feet per second

EG = (WG * VG * VG) / 64.4
4.3 foot pounds
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Last edited by Shade; 10-12-2011 at 10:06 PM.
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Old 10-14-2011, 12:20 AM   #28
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Quote:
Originally Posted by chachaseeds View Post

I found this video of an 8 year old shooting the 9mm and .223 ar15. Looked like the .223 had MUCH more muzzle rise, at least to this kid, but then the 9mm has a suppressor. Bottom line, I think the .223 definitely has more muzzle flip, but then the 9mm's blowback action can increased percieved recoil dramatically for some people...

9mm & 223 AR15 - YouTube
Not sure, but the 9mm Suppressor may actually be a Moerse Lekker Barrel Shroud. I have one on my Beretta CX4 9mm, and it's really just for a Cosmetic look, and doesn't function as a Suppressor. The sound that the AR9 makes in the video when fired, is what my CX4 and Hi-Point 995TS 9mm's sound like without any Suppressor. Not loud, like the AR15 is.

When watching the video, notice that the kid's firing the AR9 with the Stock under his arm, while he later fires the AR15 with the Stock up against his shoulder.

FWIW, I asked the same exact question about 9mm and .223 Recoil on a couple of other Forums, when I was looking to buy an AR15. I was actually concerned about the Recoil, so, yes... it's a valid question. (See my earlier response on this thread for specifics...).

SHADE!

Thanks for the above Data! It's appreciated!

Cheers!

BB
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Old 10-16-2011, 05:30 PM   #29
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@ Shade: Thanks for the data!!! Very Nice.
@ Blackbeard: yea, I watched the video again and indeed noticed that the kid was holding the guns differently. That probably had something to do with the muzzle rise... Anyway, Shade's data indeed proved on a technical standpoint that the .223 has substantially more recoil/muzzle flip, but I guess it's more of a matter of opinion.
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