6.5 PRC with 156gr EOL?

Hoss50

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Apr 7, 2019
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349
Location
Arizona
A buddy wants me to load some ammo for his new to him 6.5PRC. It had a 1:8 barrel on it though which looks a little suspect to stabilize the big 156. Thoughts, experience?

I was thinking 140 class might be a better option?

Thanks
 

Ckleeves

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Aug 26, 2014
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703
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Montrose, CO
Run it thru the Berger stability calculator. Never had a problem with the 156’s out of 8 twist barrels but we are also at 6k elevation. Even at sea level I think they are still fine just a very slight BC reduction.
 

Recon$$

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NEW MEXICO
What ckleeves said, I run the 140 vld out of a 1:8 and they shoot lights out. Running this load at 3050 fps.
 

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Varmint Hunter

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Dec 26, 2001
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4,563
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Long Island, New York
I run the 156 EOLs in an 8" twist (23.5") Proof barrel at 2,900 ft/sec. Accuracy at 400yds is very good. I shoot at sea level if that makes a tangible difference.
 
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Sigma

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According to the Berger stability calculator, you are golden. 1.47 stability factor at 59f sea level conditions.
 

Rjrhino88

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Jun 1, 2017
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Agree with all of the above, no issues from sea level to 8000’. Awesome combination at 3k fps!
 

rockwallraider

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Dec 28, 2007
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Im at 500 feet where I tested and shoot 156 with several 6.5 rigs ranging from 2850 to 3050 MV. verified out to 1760. You are good
 

2Ldude

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Feb 14, 2018
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36
Location
Cheyenne WY
Custom Rem 700 Long Action, .188 freebore, 28" 1:8 twist Benchmark. N565 gives 3K and some change. 1" at 300yds. 6300' ELEV. Have been down to my last 50 bullets for about 4 months so haven't shot it for a bit, didn't want to have NONE on the shelf. UPS delivering 500 today FINALLY :) :)
 

Greyfox

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Jan 21, 2008
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5,908
Location
Northeast
I run the 156’s with my 6.5x284 at 2980FPS in two rifles with an 8 twist. At my lowest altitude if 300FT and 50F temperature, to 4500FT at 30F they appear to be stable with <.5MOA accuracy, with trajectories consistent with the Berger’s published BC to 1000 yards. Using Berger’s Twist rate calculator is a stability factor of 1.48 at the lowest elevation(300FT), and above 1.5 at my hunting elevations of +2400FT). Berger’s claim of a minimum twist of 8 seems to be viable in my rifles.
 

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