131 hammer hunter 6.5 prc data

Unoboats

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I have a Proof 24" w/ 7.5 tw in a Defiance AntiX action. Shoots under .5 moa at 200, 5 shot group (.963") and .5 moa at 400 yds with:

6.5 PRC ADG brass
Fed GM 210M primers
58 grns of H-1000
OTB 2.2405"
OAL 2.2926"
2896 f/s 26 SD

Not proud of the velocity yet but still a work in process. No sign of pressure at all.
 

JAYgs8163

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Any updates here? I’m running the 131 HH with RL 26 and maxed out at 57 with 2.284 CBTO. Running 56.8 @ 3121 FPS, ADG Brass, CCI mag primer. 7.5 SD. 22” proof 7.5 twist
 
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Hard rock

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Dec 20, 2020
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Tomball Texas 77377
Any updates here? I’m running the 131 with RL 26 and maxed out at 57 with 2.284 CBTO. Running 56.8 @ 3121 FPS, ADG Brass, CCI mag primer. 7.5 SD.
My load for the 131 hammer 25" Bartlein 7-5 twist 5 r 56.5grs N165 3160 57.5 grs 3190 settled on 57.3 gr cci 250 oal started out at 3.00 ended up 2.960 win mod 70 pre 64 mag lenght isnt a factor
 

JAYgs8163

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Sep 27, 2011
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Southern Arizona
My load for the 131 hammer 25" Bartlein 7-5 twist 5 r 56.5grs N165 3160 57.5 grs 3190 settled on 57.3 gr cci 250 oal started out at 3.00 ended up 2.960 win mod 70 pre 64 mag lenght isnt a factor
I might try a slightly faster powder. Maybe H4831, Superformance, and RL22 just to see how it works. I’m pretty happy where I am and with a 22” barrel no less.
 
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