Any suggestions on 308

Cory Lee

Sergeant
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Apr 1, 2008
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I've got two 308's.
700p with 26" barrel 1/12 twist and
AR10 16" barrel 1/10 twist.
Haven't shot the AR10 yet but have had good results with the 168 SMK out of the 700p out to 600 yards but would like to shoot out to 1000. Out of these what do you suggest for the two? I understand the 175 is better after 600 and that it would be better out of the AR10 with the slower twist.

168 SMK
175 SMK
168 A-Max
178 A-Max

All would be from The Hunting Shack and I can get the A-max for about $100 cheaper per 500 rounds.

Thanks for the suggestions.
 

BOLTRIPPER

Not Carlos Danger
Belligerents
Sep 25, 2001
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Re: Any suggestions on 308

you will find that driving a semi auto to accurate effect at 1000yd is a problematic proposition......
 

427Cobra

Lt. Colonel
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Nov 24, 2005
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Re: Any suggestions on 308

155 Scenars will work well in both, skip the 168's all together, 175\178 will also work well.
 

Shady_Jay

Gunny Sergeant
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Jan 3, 2006
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Re: Any suggestions on 308

I would choose the 175SMK for both of them out of your selection.
 

Tactical

Gunny Sergeant
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Nov 15, 2001
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www.tacticalintervention.com
Re: Any suggestions on 308

155 Scenar
44-45 grains H4895 Work up to it
CCI BR primer
Lapua Case
2.8" OAL

Should beat up any of the 165-175 bullets you can run at mag length and have less recoil

You have good twist for it out of short bbl
 

Cory Lee

Sergeant
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Apr 1, 2008
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Re: Any suggestions on 308

Thanks for the suggestions. I didn't expect to be able to even get to 1000 with AR10, especially with the 16" barrel, but I'm hoping for 6 or 700. Guess I'll go with the 175 SMK. I don't know anything about reloading yet. Maybe one day. Thanks again.
 

desertHK

Gunny Sergeant
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Feb 17, 2008
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Re: Any suggestions on 308

With the AR 10, going with the heavier bullet 175 SMK you may not be able to push it fast enough to reach to 600 - 700 <span style="text-decoration: underline"><span style="font-weight: bold">ACCURATELY</span></span>. My friend has a DPMS 308 and faces the same problem. Even though it is a faster twist of 1:10" you just don't have enough barrel length to generate the speed to stay supersonic out to the longer distance. He ended up using the 155 scenars and has been very happy with it. JMHO
 

jttrim

Private
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Dec 2, 2008
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Re: Any suggestions on 308

Agreed use the 700 with 155 scenars or 175 matchkings to 1000. And keep the auto under 800.
 

Wil

PRE
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Feb 16, 2006
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Re: Any suggestions on 308

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: marduk185</div><div class="ubbcode-body">losing too much acceleration in the gas tube man. ar-10's a 800 gun bro. </div></div>


There are several who would disagree with that...
 

Cory Lee

Sergeant
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Apr 1, 2008
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Re: Any suggestions on 308

Gonna get the 175 smk's and try it in both. They both have great accuracy out to 500 with 168 smk's . Hadn't had a chance to go any further. Gonna go try them at 1000 when I get the 175's. Doubt the AR will get there. Thanks everybody.
 
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300ATT

Induna
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Oct 29, 2008
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The 168 are very accurate Bullets but they run out of steam in at distance especially in a gas gun. The 175 SMK was developed over 20 years ago in part so shooters competing w/M1A's could have bullet that would stay super sonic at 1,000 yards. I can say from hands on experience that an M1A is denfinately a 1,000 yard gun - don't know about an 16" AR 10 though.
 

XLR308

Major Hide Member
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Mar 22, 2018
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178AMAX worked up with either Varget or AR-COMP. In my M700 with a 26" 1-12 twist 2650fps is the sweet spot for both powders with the edge in accuracy going to AR-COMP.
Can't comment on the AR I've never owned any large frame AR rifles.
 

CRT2

Oberstleutnant
Online Training Access
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Jul 7, 2013
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168 grain A-MAX TAP 2628 fps at 70 degrees from my LMT MWS 18" SS. At 1000 yds should be 1135 fps and 480 fpe. Approximately 39 MOA up. Can ring steel at Rayner's Range at 1000 yds.
 

fdkay

Gunny Sergeant
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Nov 27, 2009
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The 168 are very accurate Bullets but they run out of steam in at distance especially in a gas gun. The 175 SMK was developed over 20 years ago in part so shooters competing w/M1A's could have bullet that would stay super sonic at 1,000 yards. I can say from hands on experience that an M1A is denfinately a 1,000 yard gun - don't know about an 16" AR 10 though.
Holy thread resurrection from 8 years ago!!!
He's probably made his decision by now.
 

combatgrunt84

Sergeant of the Hide
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I have a DPMS GII Recon 16in with 1/10 twist had no issues keeping hitting at 500 and it was my first time shooting that far ever.

168grn A-max
42grns varget
2.800 COAL
2448fps 10ft from muzzle
CCI Large Rifle
Hornady Brass