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post #1 of 22 (permalink) Old 07-28-2011, 04:30 AM Thread Starter
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Ar-15 Question

I was looking around at an Ar15 that I would like to get soon. I want to try and get as close as a model as the USMC uses in their boot camp. Is it something along the lines of a 20 inch barrel or something? If so I found this at a gun shop 5 minutes away (Ace Sporting Goods)

BUSHMASTER XM15-E2S 223 REM

Does the USMC use the 5.56 round? or is there no noticeable features between shooting that and the .223?
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post #2 of 22 (permalink) Old 07-28-2011, 06:14 AM
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Re: Ar-15 Question

The military uses 5.56.

My understanding of it is you can use .223 and 5.56 in rifles chambered for 5.56, but you can't use 5.56 in rifles chambered for .223.

Someone will chime in with more details I'm sure.
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post #3 of 22 (permalink) Old 07-28-2011, 10:52 AM
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Re: Ar-15 Question

Cabelas in Wheeling also carries this gun (that is where I bought mine). You'd have to drive a little farther, but you won't have to deal with the arrogance of the Ace staff.

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post #4 of 22 (permalink) Old 07-28-2011, 01:39 PM
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Re: Ar-15 Question

You are correct muskie, it's because a 5.56 has a much higher case pressure than a .223

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post #5 of 22 (permalink) Old 07-28-2011, 02:53 PM
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Re: Ar-15 Question

5.56 case walls are thicker and the primers are crimped to handle the higher pressure. I believe the two most common military bullet weights are 55 and 62 grains. For the frugal, like myself, I reload for my AR and prefer the thick walled military brass as the deflector often dents 223 brass. I also reload to keep the gun cleaner with better powders, and us heavier bullets as I have a 1 in 9 twist.

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post #6 of 22 (permalink) Old 07-28-2011, 05:21 PM Thread Starter
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Re: Ar-15 Question

Shooting the two different rounds side by side, could you tell a difference in recoil or what not?
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post #7 of 22 (permalink) Old 07-29-2011, 12:37 PM
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Re: Ar-15 Question

No, and I would suggest another brand of AR outside of Bushmaster. But that's my personal preference.

I'd look at

LWRC
LMT
Daniel Defense
Spikes Tactical
BCM

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post #8 of 22 (permalink) Old 07-29-2011, 02:53 PM
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Re: Ar-15 Question

LWRC and POF = Top of the line

If your looking at a Bushmaster, those are out of that league.

I have a Stag and its a good rifle. S&W MP15 would be another good choice.

Go to CDNN sports online catalog as they usually have something on sale from S&W

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post #9 of 22 (permalink) Old 07-30-2011, 02:20 AM Thread Starter
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Re: Ar-15 Question

How is a Colt? I am just going off what Ace has in used firearms, I am just 17 and dont have loads of bucks coming in haha.
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post #10 of 22 (permalink) Old 07-30-2011, 02:35 AM
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Re: Ar-15 Question

Don't want to hijack the thread but what do you guys think of the Sig Sauer 516 patrol in 5.56 with 1:7 twist and chrome barrel, Sig seems pretty reputable and I thought this would allow me to shoot heavier 88gr ball. I thought it might be a little more accurate at longer distances. To the original OP I was at dunham's today in sharon with the family and they have bushmaster's with 1:9 twist, chrome barrel stamped .223/556 for just under a grand, and they said they do lay-away.

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