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Old 06-01-2013, 09:12 PM   #21
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How does it effect accuracy and optics when u change uppers I assume I would have to change barrels also
The barrel is a fixed part of the upper assembly, optics mount to the top rail and usually stay with the upper they are sighted on. At least mine do.

Accuracy is usually not a problem unless you bump the optics or sights. One lower easily handles a number of different uppers. This is one of the facts that make the ar so attractive to shooters. A 22lr for practice, 223 for some tactical workouts and a 6.5/6.8 for deer sized game and longer ranges. Add a 458 SOCOM or 50 beowulf for hog and you can use it on anything in north America.
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Old 10-07-2013, 08:44 AM   #22
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I love my 6.8 SPC. Hog rifle primarily, but can be used for white tail here in Texas. The .270's actually use a .277 bullet, so don't be confused. Mine gets the best accuracy with 110-115gr, but depends on your twist and barrel length.

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Old 10-07-2013, 10:28 AM   #23
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OP, what "state paperwork" are you waiting for?

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Old 10-13-2013, 11:45 PM   #24
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I just ordered a ar15 lower reciever but it may be a while befor I get it beacause wating time fore state paper work but I was wondering what caliber should I build it and why?
What is sompting bigger Thain a 223 that isint a odd ball that I could make it as I want this to be a acurate gun and may want to do alittle hunting with it maby go coyote or hog but I don't want a 50bmg or anything what's your thoughts and why thanks

W
Make it into a 308 youll have accuracy well beyond the limmits of a normal hunt ( just in case ) .... The reloading/sizing dies are ample to say the least and the ammo is everywhere fun to shoot ! A nail driver at 1000+ yds ! Lots easy to come by other than that i would look into 7mm and the beloved 8mm chamberings all good accurate and fun with plenty overstock everything ... Hope i helped
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Old 10-14-2013, 10:42 PM   #25
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Make it into a 308 youll have accuracy well beyond the limmits of a normal hunt ( just in case ) .... The reloading/sizing dies are ample to say the least and the ammo is everywhere fun to shoot ! A nail driver at 1000+ yds ! Lots easy to come by other than that i would look into 7mm and the beloved 8mm chamberings all good accurate and fun with plenty overstock everything ... Hope i helped
308 is not an ar15 caliber, only ar10. The cartridge is too long for the standard ar's mag well. Maybe you are thinking of 300 blackout?

6.8 is fast becoming the choice hunting caliber. Needs a different barrel, bolt and magazine. Everything else is straight ar15. Uses a .277 bullet at 110 grains and is deaths thunderbolt on hogs...
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