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Discussion Starter · #1 ·
looking to build another Ar-15, and was wanting input about the parts list and just a general suggestions about the build. The purpose is longer range shooting (200-600 yards) with a 77gr bullet

Kriger barrel 1:7 or 8 twist 24 inches with .223 wylde chamber
Stag lower
Cmmg upper - flattop
LMT bolt
Jewel trigger
RRA LPK
VTAC free float handguard
Bipod Harris or other (recomendations)
Magpul PRS
Scope - ? (recomendations)

Hows it look?

budget not a huge concern becuase i will be building slowly as I have the money

also suggestions on where to buy would be helpful
 
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Discussion Starter · #2 ·
looking to build another Ar-15, and was wanting input about the parts list and just a general suggestions about the build. The purpose is longer range shooting (200-600 yards) with a 77gr bullet

Kriger barrel 1:7 or 8 twist 24 inches with .223 wylde chamber
Stag lower
Cmmg upper - flattop
LMT bolt
Jewel trigger
RRA LPK
VTAC free float handguard
Bipod Harris or other (recomendations)
Magpul PRS
Scope - ? (recomendations)

Hows it look?

budget not a huge concern becuase i will be building slowly as I have the money

also suggestions on where to buy would be helpful
with the 7 twist try a heavier bullet,i think sierra makes a 90 grain SMK
 
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Discussion Starter · #4 ·
with the 7 twist try a heavier bullet,i think sierra makes a 90 grain SMK
The 90 only works with a 1-6.5 or faster. The longer the bullet the faster the twist. Weight has some to do with it but it has more to do with the length of the bullet.

For the 70+ weight range I like the 75gr BTHP from Hornady. Not the A-max. Also you need this book.
http://www.zediker.com/books/ar15/ar15main.html


And this one.

http://www.zediker.com/books/handloading/hlmain.html


These 2 books will teach you more than you will ever get on the Internet.
 
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Discussion Starter · #6 ·
Curious... why the .223 wylde instead of the NATO chamber that would let you shoot the .223 and the higher pressure 5.56 nato rounds?

Sorry if it's a dumb question, i'm new to the AR.
 
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Discussion Starter · #7 ·
becuause the .223 wylde chamber has tighter tolerences the the 5.56 nato chamber which equates to better accuracy
 
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Discussion Starter · #10 ·
Look at NightForce Scopes and LaRue for the mounting, or even Badger for rings and a base. Another option all around is a White Oak assembled upper. You might consider a mono-pod for attachment to the PRS.. there is a nicely covered 1913 rail on the bottom for that specific use.
 
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Discussion Starter · #12 ·
Curious... why the .223 wylde instead of the NATO chamber that would let you shoot the .223 and the higher pressure 5.56 nato rounds?

Sorry if it's a dumb question, i'm new to the AR.
becuause the .223 wylde chamber has tighter tolerences the the 5.56 nato chamber which equates to better accuracy
223 Wylde is not that much tighter than NATO. It has some better dimensions but overall it was designed specifically for the AR platform. It has a slightly longer leade than 223 Remington and is better at using longer bullets.
http://www.radomski.us/njhp/cart_tech.htm
http://www.ammo-oracle.com/body.htm
http://www.thegunzone.com/556dw.html
 
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Discussion Starter · #15 ·
I might get a 20" barrel if accuracy is priority. Look hard at the Hornady 75 A-Max. Monstrous accuracy from my AR and AUG. Vihtavouri N540 powder, too.
 
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Discussion Starter · #16 ·
is the kriger barrel better than the rest is it worth the extra money
The barrel will loose accuracy in about 2500-3000 rounds anyway. Go with a really awesome gunsmith instead. Many people don't realize that the gunsmith can ruin the best of barrels. White Oak uses Many different brands as well as Kreiger to make their barrels.

http://www.whiteoakprecision.com/

John Holinger can build your entire gun or just the top end for a reasonable price.

Also check out his "budget" site.

http://www.whiteoakarmament.com/
 
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Discussion Starter · #17 ·
I'd suggest a RRA 2-stage kit or maybe a geisler.

For a scope... Nightforce or if you're on a budget a Super Sniper.
 
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Discussion Starter · #19 ·
Knight of Light gave some good advice here and especially about bullet twists so I see no need of repeating it here.

But to answer your question whether you need a custom barrel or not really depends on what type of shooting you're going to be doing at 600 yards. If you're competing, then obviously, you want the best that's out there. I can attest to Krieger's customer service. They really know their stuff.

If you're hunting and having fun, it may not be absolutely necessary. I also put my 2 cents in with a 20 (or longer) barrel for those distances. There are some tricks and add-on's to make an otherwise stock AR shoot very well. I prefer a 24 inch barrel though instead of a 20.

First and foremost, if you use over the counter ammo, there's not much you're going to be able to do to increase velocity. But there are a few things that can be done mechanically, though with any semi auto you're going to lose valuable pressure inherently due to the gas system. This is unavoidable, but this is where the "tricks" come into play.

Adding a bolt carrier weight will keep the bolt remained locked a bit longer. I was lucky enough to get one of Devon's (SNS Industries) prototype carrier weights. In all honesty, it's very well made and does exactly what it's supposed to do.



Also, exchanging the stock buffer spring to a Tubbs/Superior shooting chrome silicone flat coil springs will also add some delay, but I also like their overall function much better than a stock buffer spring. They really are sweet.

Also adding a heavier buffer will also keep the bolt closed longer, and will also aid in reliability, though I admit I haven't ever had any problems from that anyway.



And finally, Armforte' and MGI markets an adjustable gas tube. This tube can be tuned to the individual load you're shooting to where it just barely clears the magazine and ejects the shell and then cycle another round, or can almost be turned completely off in essence creating a single shot rifle letting as much pressure possible push the bullet out of the bore and downrange where it belongs. This means a lot to accuracy, and also downrange punch.



I'll attach a pic of the whole rifle below,though not all the upgrades have been mentioned here, or are even seen in the pics, but it is one sweet shooting rifle nonetheless.

 
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