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Old 01-24-2010, 04:16 PM   #41
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ar-10?.......
I almost specified anything in the 223 platform...
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Old 01-24-2010, 06:00 PM   #42
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This is an interesting thread! Ive been doing some web research, this is what Ive found. Please correct me if I am misled
If you want the biggest possible in a standard 5.56 lowered AR-15 I think its the 50 Beowulf


5.56____458 SOCOM___50 Beowulf


You probly wont see 44mags, 460, or 500 chambered AR's because the boltface diameter is too small to work with the large rimmed case. You'd have to open the bolt face out into the locking lugs...probably not a real good idea.
-----
The 450 Bushmaster, 458 SOCOM, and 50 Beowulf all use a .473 case head diameter to work with a 7.62X39 AR bolt but they get there different ways.

The 458 SOCOM, and 50 Beowulf basically use lengthened 50AE pistol cases that have had the rim rebated(cut down) to .473

The 450 bushmaster cases can be made by shortening 284 winchester cases.
284 win cases already have a rim diameter of .473.

284 Win___450 BM___5.56
-----

I really think the 458 SOCOM is a good choice. Nice design, wide selection of .458 rifle bullets and seems like reloading components might be more readily available than the others.

The 450 Bushmaster is also interesting using .45 cal pistol bullets and cases that can be made by shortening/sizing 284 winchester or 6.5-284 brass. Good if supply of 450 BM brass dries up or is too expensive

The 50 Beowulf is a beast, but less popular than the others. Components may be harder to find in the future. Currently $58 to $67 per100, but out of stock everywhere I've looked.

A Bushmaster with a Big Bite
The 458 SOCOM
Alexander Arms .50 Beowulf

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Old 01-24-2010, 06:02 PM   #43
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Thanks slow, stock on order.

I will give Pete a call but I did find that RRA has a 2 stage trigger LPK with a Hogue or ERGO grip.

Item#: AR0120NME (Lower Receiver Parts Kit, Two Stage Trigger, ERGO Grip Ambi Black) $200

Lets see, trigger $100 + grip <$30 = $130 so the pins & springs cost $70?????

Got to be a better way?
Cane, I've been trying to find an answer to that very question. Best I can find on the kit your talking about is $190+shipping. I can get a single stage trigger kit for $130. That's a worked trigger at 4#. 3# costs $10 more.
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Old 01-24-2010, 06:21 PM   #44
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This is an interesting thread! Ive been doing some web research, this is what Ive found. Please correct me if I am misled
If you want the biggest possible in a standard 5.56 ...[/url]
Thanks that actually answered my questions on this thread and the other. I didn't think about rim diameter. You would have to mill out the locking lugs to fit the larger diameter rim which would cause problems for strength. The other option is a new bolt all together which would be cost prohibitive for such a specific design, not to mention the chamber would have to be redesigned to match that bolt...way too expensive...

I did research the 50 beo. It is not available in lead free for use in CA, the ammo is more expensive and harder to find like you said.
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Thomas Jefferson
From the great speaker...er uh Barak Obongo

"Liberals make great proctologists. They're the only ones who truly know what the inside of an anus looks like."~me

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Old 01-24-2010, 06:23 PM   #45
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I think you are very correct Gate. Your research of this information is very much in line with what I have come up with also. I do think the 458 SOCOM is the happy medium here and I do think it will be a caliber that will be more readily available and useful, followed closely by the 450 Bushmaster.

Jack

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Old 01-24-2010, 06:45 PM   #46
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Not sure, but get in touch with these folks: sales@rbprecision.com

I'm pretty sure it was them who would customize a lower parts kit to fit your needs. I may be wrong, but they came to mind.

Other than that, the price you came up with up there, sounds about right.

You might try this: ADCO White Oak lower parts kit for $40. Then buy the 2 stage from PK: PK Firearms - RRA 2 stage NM for $99. And the Ergo, not sure which AMBI you were looking at, but PK has a few in stock, too: PK pistol grips

That might save you a little $$'s.

Slo
Thanks slo, will do.
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Old 01-26-2010, 12:53 AM   #47
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It's here!





Woot!!!!

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Old 01-26-2010, 01:11 AM   #48
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I'm really jealous. get that thing together and give us a range report!

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"A strong body makes the mind strong. As to the species of exercises, I advise the gun. While this gives moderate exercise to the body, it gives boldness, enterprise and independence to the mind. Games played with the ball, and others of that nature, are too violent for the body and stamp no character on the mind. Let your gun therefore be your constant companion of your walks."
Thomas Jefferson
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"Liberals make great proctologists. They're the only ones who truly know what the inside of an anus looks like."~me
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Old 01-26-2010, 01:29 AM   #49
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I'm really jealous. get that thing together and give us a range report!
Got to catch my breath with the cash flow!!

Done spent my Social Security check for this month.

The good news is the big $ parts are here.
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Old 01-26-2010, 11:06 AM   #50
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Wait until it's time to purchase ammo!

Enjoy

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