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Which caliber for AR-308 build? #5866265 08/06/15 06:16 PM
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The time has come to step up from the AR-15 platform and I've narrowed it to these three. I hand load so factory ammo isn't a concern.

AR-308 build
single choice
Votes accepted starting: 08/06/15 06:14 PM
Re: Which caliber for AR-308 build? [Re: tenyearsgone] #5866741 08/06/15 10:13 PM
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Tough call....

I was thinking of going gas but its a pain to keep track of brass with gassers. And with the specialized calibers they get a bit pricey


I would do 6.5 Creedmoor personally. the 7mm0-08 would be a second.

Wonder if you could fit a 6.5x47 into a 308 ar...

Re: Which caliber for AR-308 build? [Re: tenyearsgone] #5866752 08/06/15 10:19 PM
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I built a 260 rem and a 338 fed. Both are nice.


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Re: Which caliber for AR-308 build? [Re: tenyearsgone] #5866805 08/06/15 10:53 PM
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.260 or 7mm-08, brass for days and cheaper. I voted for the '08.


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Re: Which caliber for AR-308 build? [Re: tenyearsgone] #5866819 08/06/15 11:05 PM
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6.5 Creedmoor


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Re: Which caliber for AR-308 build? [Re: tenyearsgone] #5866823 08/06/15 11:06 PM
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For what use?


Do not trifle in the affairs of dragons, for thou art crunchy and taste good with ketchup.
Re: Which caliber for AR-308 build? [Re: tenyearsgone] #5867115 08/07/15 01:52 AM
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300 RSAUM, had one it shot well but brass was hard to find. Hard to go wrong with a 6.5 bullet.
I built a 308, because I have a 6.5 Grendel.


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Re: Which caliber for AR-308 build? [Re: P_102] #5871368 08/10/15 03:14 AM
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Originally Posted By: P_102
For what use?


Just to have an AR-308 platform.

Re: Which caliber for AR-308 build? [Re: tenyearsgone] #5871384 08/10/15 03:23 AM
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Slow powders used by the 6.5's usually don't mix well with semi-autos. Factory creedmoor ammo has been known to blow primers in ar10's. On top of that, you are going to loose several hundred fps compared to a bolt action. Something to think about.

I would stick with a plain jane 308 running 155, 168, 175's. Maybe 190's if I could squeeze them into 2.8 inches.

Re: Which caliber for AR-308 build? [Re: tenyearsgone] #5871727 08/10/15 02:48 PM
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I have heard the same thing..in fact a friend's 6.5 AR10 was blowing primers on the Hornady factory ammo.

I have another friend who just built up a lightweight 20" 243 for hunting.

My AR10 is a lightweight 308, Wilson Combat,my 6.5 will be a precision bolt gun.

EDIT
Re read your initial post..
I would look hard at the 7mm08, I think you can get away with a slightly shorter barrel which is good if you want to hunt, especially with a can.

Last edited by ccoker; 08/10/15 02:50 PM.
Re: Which caliber for AR-308 build? [Re: tenyearsgone] #5872189 08/10/15 08:22 PM
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I built a 6.5 creed and love it. Was shooting clay pigeons at 1000 the other day. The factory 140 grain amax is a little hot. I have not blown primers in the few that I shot. I was getting excessive swipes though. I reload my own ammo so it does not matter.


Originally Posted By: AmoCuernos
If you shoot a young deer because a neighbor will shoot it, you are that neighbor.
Re: Which caliber for AR-308 build? [Re: tenyearsgone] #5872278 08/10/15 09:16 PM
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clay pidgeons at a grand is fun stuff

is that a Mark6 3-18?
I run one on my 308...



Re: Which caliber for AR-308 build? [Re: ccoker] #5872284 08/10/15 09:20 PM
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Originally Posted By: ccoker
clay pidgeons at a grand is fun stuff

is that a Mark6 3-18?
I run one on my 308...




Yes, with the m5c2 turrets. I love the scope and rifle.

Nice rig


Originally Posted By: AmoCuernos
If you shoot a young deer because a neighbor will shoot it, you are that neighbor.
Re: Which caliber for AR-308 build? [Re: tenyearsgone] #5872292 08/10/15 09:23 PM
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likewise!

Re: Which caliber for AR-308 build? [Re: tenyearsgone] #5872371 08/10/15 10:10 PM
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These guns look nice. Just not looking forward to the price hike on parts.

Re: Which caliber for AR-308 build? [Re: tenyearsgone] #5872410 08/10/15 10:33 PM
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I am on my second AR10 6.5 Creedmoor and both shot great. I did mess around with the 140's a little but had a few malfuctions so I settled in on 123's using both Amax and the Scenar's. Both will reach out to 1000 with ease. I have had good success with a few powders that I don't hear mentioned much in Creedmoor circles. IMR4007 SCC is very good(Nosler accuracy Load)and AR Comp along with Reloder 17


"Anyone taking up handloading necessarily plays with unknown factors and takes chances. But so does anyone who drives a car,goes to a cocktail party,eats in a restaurant,or gets married."

Jack O'Connor 1963
Re: Which caliber for AR-308 build? [Re: tenyearsgone] #5872418 08/10/15 10:42 PM
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Originally Posted By: tenyearsgone
These guns look nice. Just not looking forward to the price hike on parts.


Buy once, cry once; I've got about 6k in mine

Last edited by Tye; 08/10/15 10:43 PM.

Originally Posted By: AmoCuernos
If you shoot a young deer because a neighbor will shoot it, you are that neighbor.
Re: Which caliber for AR-308 build? [Re: tenyearsgone] #5872784 08/11/15 02:11 AM
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Yikes!

I've priced parts for a decent one out at about $1,900.

Is it pretty much the same as building an AR-15?

Re: Which caliber for AR-308 build? [Re: tenyearsgone] #5872794 08/11/15 02:18 AM
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6k probably included the 3k leupold.

Re: Which caliber for AR-308 build? [Re: tenyearsgone] #5872795 08/11/15 02:19 AM
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I had exactly $2600 in my CMMG MK3 CBR minus suppressor, it is a 16" carbine 308 and pops steel at 800 yards nicely. It might be a bit harder than the 6.5CM, but don't have a 6.5CM to compare it to. It is no longer my long range gun and wears a collapsible stock and SWFA 1-4 for hunting.



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Re: Which caliber for AR-308 build? [Re: 6.5x47Lapua] #5872886 08/11/15 03:16 AM
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Originally Posted By: 6.5x47Lapua
6k probably included the 3k leupold.


Yes. I went with top of the line everything with it. I think the 20" Brux barrel was around $700ish


Originally Posted By: AmoCuernos
If you shoot a young deer because a neighbor will shoot it, you are that neighbor.
Re: Which caliber for AR-308 build? [Re: tenyearsgone] #5873553 08/11/15 05:25 PM
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I've had my LR308 for over 2 months and haven't shot it yet... Nikon Monarch 5-20 will be getting picked up this Thursday. Can't wait to shoot it. This will be my deer rifle for this year... or my Rem700 AAC-SD 16.5" 308.


Re: Which caliber for AR-308 build? [Re: tenyearsgone] #5873998 08/11/15 10:04 PM
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That is a good looking rifle!

Re: Which caliber for AR-308 build? [Re: tenyearsgone] #5878226 08/14/15 01:37 PM
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Got my scope in. I think this thing is going to be a shooter!


Re: Which caliber for AR-308 build? [Re: tenyearsgone] #5880381 08/16/15 01:48 AM
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Looks like the .260 is the poorest choice. Can you hunt medium game with a 6.5?

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