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 Post subject: Accubond 110 grain for a 257 Roberts
PostPosted: Mon Nov 06, 2006 10:43 am 

Joined: Mon Nov 06, 2006 9:29 am
Posts: 84
Location: Underhill, Vt.
I just joined this forum and I'm looking for some info. I shoot a .257 Roberts and have shot Nosler bullets for years. I have used the ballistic tip as well as the partition bullet. I have just ordered some Accubond bullets in 110 grain. Where can I find the loading data for this bullet?

Thanks.

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PostPosted: Mon Nov 06, 2006 12:12 pm 

Joined: Thu Nov 04, 2004 12:08 pm
Posts: 16505
Location: Rockford, MI
I started load development with the same bullet.

257 Roberts
110 gr AB
R-P case
Federal GM210M primer

IMR 4350
43.0 grs Avg 2799 fps ES 43 SD 23
43.5 grs Avg 2818 fps ES 47 SD 23
44.0 grs Avg 2849 fps ES n/a SD n/a

RL22
48.0 grs Avg 2974 fps ES 16 SD 8

Accuracy with all loads in my 700 Classic 24" barrel is around 1.0"

I will work on improving accuracy at a later date due to the fact that hunting season is almost upon us here.

JD338


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PostPosted: Mon Nov 06, 2006 12:17 pm 

Joined: Mon Nov 06, 2006 9:29 am
Posts: 84
Location: Underhill, Vt.
JD338,

Thanks!
Please excuse my ignorance :oops:, but what does "ES" and "SD" stand for?

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PostPosted: Mon Nov 06, 2006 12:39 pm 
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Joined: Sat Oct 30, 2004 6:45 pm
Posts: 18979
Location: Cheyenne, WY
SD- Standard of deviation--basically a statistical term. The lower the # the better the uniformity of the load.

ES- Extreme spread --highest velocity minus lowest velocity of SAME load.

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