30 378 weatherby

M

maddy

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Nov 25, 2019
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homer city pa
with the 245 grain berger bullets what would you load for powder and what velocity out of a 30 inch barrel
 
Dosh

Dosh

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The 245gr Berger needs a minimum 1:9 twist. If you have a factory Wby barrel it's a 1:10.
 
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ann brezinski

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Feb 12, 2008
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rifle is a custom with a 1/10 hart barrel.so i will not be shooting them then
 
Slick8

Slick8

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The Republic of Texas
I say try them in the 10 twist. If they don't work, i can tell you the 230s will work fine in a 10 twist barrel. The speed you'll see from a 378 case at 30 inches may be enough to compensate for the lack of twist. Perhaps at worst you'll lose a little bc.
 
A

asd9055

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The 245gr Berger needs a minimum 1:9 twist. If you have a factory Wby barrel it's a 1:10.
Is that what Berger recommends? Because in general, in a 338 caliber, 1:10 should be good to 300 grns
 
A

asd9055

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Thank you, I was about to make an appointment for an eye exam. At $60 per 100, would be a bit pricey for most to load some to test.
I need new glasses...just can't afford them now...
 
G

GCarlton53

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Zolfo Springs, Florida
Theoretically, what if someone wanted to shoot 160s out of it, which powder and twist? With a goal of 3600 to 3700fps
 

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