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Posted: 12/17/2016 1:36:54 PM EST
What is the best .223 magnum out there that still fits the ar15 upper/lower?  Is there anything necked down from 6.8spc or 6.5 that give 15-20% more velocity on heavier bullets?  Maybe a squat 22-250 with the rebated case head like the 450 bushmaster ?
Link Posted: 12/17/2016 1:42:16 PM EST
Originally Posted By DarkLordVader:
What is the best .223 magnum out there that still fits the ar15 upper/lower?  Is there anything necked down from 6.8spc or 6.5 that give 15-20% more velocity on heavier bullets?  Maybe a squat 22-250 with the rebated case head like the 450 bushmaster ?
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5.56x45 is what you're looking for.
Link Posted: 12/17/2016 1:49:39 PM EST
If you're willing to step it up to .243 in an AR15 platform. the 243 WSSM cannot be beat.
Left to right. .223 Rem .243 Win. .243 WSSM
Link Posted: 12/17/2016 1:53:27 PM EST
5.56x42.
Link Posted: 12/17/2016 1:56:12 PM EST
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Originally Posted By Scottyman:
If you're willing to step it up to .243 in an AR15 platform. the 243 WSSM cannot be beat.
Left to right. .223 Rem .243 Win. .243 WSSM
http://www.dtechuppers.com/uploads/1/0/5/3/10530479/1327459743.jpg
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No, I have a good supply of .224 bullets in 55g, 69g, and 77g.  
Link Posted: 12/17/2016 2:00:34 PM EST
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Originally Posted By DarkLordVader:
No, I have a good supply of .224 bullets in 55g, 69g, and 77g.  
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223 WSSM
Link Posted: 12/17/2016 2:05:59 PM EST
220 Swift is still best swift.

Link Posted: 12/17/2016 2:50:00 PM EST
220 Swift doesn't do anything that a 22-250 Ackley can't do better.
Link Posted: 12/17/2016 3:06:49 PM EST
Since almost no one has actually responded to your question, instead trying to cram an ancient long action cartridge where it wont fit...

For the standard AR15 platform package, the 22x6.8 is about the best thing going. The WSSM is a non starter...almost obsolete in terms of OEM support, and they really didnt work all that good anyway. The 22x6.8 will give up about 100-150fps to the WSSM, but be much, much easier to live with.
Link Posted: 12/17/2016 3:19:08 PM EST
Keep an eye on Nosler at SHOT show for the answer to this question.
Link Posted: 12/17/2016 3:35:47 PM EST
You could go with an Ackley Improved version of the 222 Remington Magnum.
This allows the use of a standard bolt and I assume you could use regular magazines.

The above mention of the 22-6.8 is very interesting.
If velocity runs right between 223 and 22-250 that would be sweet.
Link Posted: 12/17/2016 3:57:41 PM EST
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Originally Posted By TZLVredmist:
Keep an eye on Nosler at SHOT show for the answer to this question.
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If you know something....  Out with it!
Link Posted: 12/17/2016 4:06:31 PM EST
22-6.8. Have seen guys claiming the 75g. AMax at 3300 fps out of 20" barrels.
Link Posted: 12/17/2016 4:11:16 PM EST
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Originally Posted By LS1POWERED:
22-6.8. Have seen guys claiming the 75g. AMax at 3300 fps out of 20" barrels.
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Link Posted: 12/17/2016 4:21:22 PM EST
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Originally Posted By Hay_Bale:
You could go with an Ackley Improved version of the 222 Remington Magnum.
This allows the use of a standard bolt and I assume you could use regular magazines.

The above mention of the 22-6.8 is very interesting.
If velocity runs right between 223 and 22-250 that would be sweet.
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222Rem Mag is getting tough to even find brass for.
Link Posted: 12/17/2016 4:22:00 PM EST
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Originally Posted By LS1POWERED:
22-6.8. Have seen guys claiming the 75g. AMax at 3300 fps out of 20" barrels.
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Ran into this GEM....
http://www.ar15.com/forums/t_3_121/650204_22X6_8_Prarrie_Dog_Nightmare.html
Link Posted: 12/17/2016 4:22:17 PM EST
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Originally Posted By DarkLordVader:

If you know something....  Out with it!
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The .223 Nosler?
Link Posted: 12/17/2016 4:56:58 PM EST
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Originally Posted By ARMED-PILOT:

222Rem Mag is getting tough to even find brass for.
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Bump and trim a .204.
Link Posted: 12/17/2016 5:29:56 PM EST
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Swift or a 22-250 as a very close second.  
Link Posted: 12/17/2016 5:53:53 PM EST
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Originally Posted By Bob243:

Swift or a 22-250 as a very close second.  
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You know those are great rounds, but don't fit in an ar15 upper/lower.  AR10 yes, but not ar15.
Link Posted: 12/17/2016 6:11:55 PM EST
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Originally Posted By Combat_Jack:
220 Swift doesn't do anything that a 22-250 Ackley can't do better.
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Ignorant you are.
Link Posted: 12/17/2016 6:14:14 PM EST
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Originally Posted By Bob243:

Swift or a 22-250 as a very close second.  
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I will agree with that , but I like the 219 Zipper also.
Link Posted: 12/17/2016 6:14:54 PM EST
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Originally Posted By DarkLordVader:
You know those are great rounds, but don't fit in an ar15 upper/lower.  AR10 yes, but not ar15.
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No one cares if they do .... This is GD people dont play by the rules in a thread.
Link Posted: 12/17/2016 6:21:50 PM EST
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Originally Posted By Sharpshooter:



Ignorant you are.
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2.5% velocity difference at best.
Link Posted: 12/17/2016 6:23:40 PM EST
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Originally Posted By Combat_Jack:


2.5% velocity difference at best.
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No they are ballistic twins that is pretty well acknowledged by everyone.
Link Posted: 12/17/2016 6:34:27 PM EST
.223 wssm.
Link Posted: 12/17/2016 6:43:42 PM EST
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Originally Posted By Sharpshooter:


No they are ballistic twins that is pretty well acknowledged by everyone.
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Then wtf are you getting at.
Link Posted: 12/17/2016 7:16:40 PM EST
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Originally Posted By Combat_Jack:

Then wtf are you getting at.
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You said the ai was better....

I said nope... i will say the 220 can be had at most gun stores. The ai is a handloadig only proposition.
Link Posted: 12/17/2016 7:20:33 PM EST
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Originally Posted By Sharpshooter:


The ai is a handloadig only proposition.
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Most rounds worth a damn are.
Link Posted: 12/17/2016 8:06:31 PM EST
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Originally Posted By Sharpshooter:


No one cares if they do .... This is GD people dont play by the rules in a thread.
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Whacha drinking tonight ?
Link Posted: 12/17/2016 9:53:44 PM EST
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Originally Posted By Zebra120:


Most rounds worth a damn are.
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The 220 shines when hand loaded, for that matter I have owned next to no cartridges that do not perform wonderful when hand loaded. So your statement is really a dumb one. Sure you toss a 22-250 into the Ackely and fire it, accuracy is going to suffer , but you do get a fire formed case so there's that.

I have no use for wild cats .... They bring nothing to the table I cant do with something readily available at the store.

Link Posted: 12/17/2016 9:55:08 PM EST
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Originally Posted By DarkLordVader:

Whacha drinking tonight ?
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Not the best stuff but it works ok when you are sitting by the fire.
Link Posted: 12/17/2016 10:35:26 PM EST
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Originally Posted By Sharpshooter:


You said the ai was better....

I said nope... i will say the 220 can be had at most gun stores. The ai is a handloadig only proposition.
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Just shoot regular 22-250 in a pinch. You'll still be faster than 223 and accuracy doesn't really suffer.

I remember a time when 220 was on shelves but now I don't see it anymore.
Link Posted: 12/17/2016 11:13:01 PM EST
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Originally Posted By Combat_Jack:


Just shoot regular 22-250 in a pinch. You'll still be faster than 223 and accuracy doesn't really suffer.

I remember a time when 220 was on shelves but now I don't see it anymore.
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Accuracy does cause o the fire forming.... I still find 220 swift at the store when I need it, but I have enough brass I do not worry about it... Thats the only advantage I can say those improved cartridges has IMO Brass Life . However I neck size my 220 so it seems to last me a while, I did go from the original twist to 1 in 8 since I do not shoot the real light bullets as much as I once did and the original tube was shot out. Those 34 grain Noslers sure do make short work of varmints ..
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