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 twist rate
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maddad4350
Starting Member

USA
9 Posts

Posted - Feb 16 2016 :  14:42:11  Show Profile  Send maddad4350 a Yahoo! Message Send maddad4350 a Private Message  Reply with Quote
Im going to put a new barrel on my win M70 270WSM. plan on using 130gr. bullets for most of my shooting. I did Berger's twist rate stability calculator and came up that a 8"twist is better than the
10" twist that most barrel co. offer for the 270 cal. I was thinking of going with a Shilen barrel and all they offer is 10" or 11". will I be happy with the 10 or would the 8" twist be better. I don't wont to spend that kind on $$ and find out it won't shoot the way im hopping. Thanks.







Hockeynick39
Advanced Member



USA
4698 Posts

Posted - Feb 16 2016 :  14:55:23  Show Profile  Send Hockeynick39 an AOL message Send Hockeynick39 a Private Message  Reply with Quote
The 1:10 twist is the accepted "universal" twist rate for the majority of the barrels standard hunters use. If this is the bullet that you are wishing to use, then you are fine because Berger recommends a 1:10 twist anyway.

http://buybergerbullets.3dcartstores.com/270-Cal-130-Gr-VLD-Hunting-_p_80.html

Edited by - Hockeynick39 on Feb 16 2016 15:00:07
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maddad4350
Starting Member

USA
9 Posts

Posted - Feb 16 2016 :  15:22:40  Show Profile  Send maddad4350 a Yahoo! Message Send maddad4350 a Private Message  Reply with Quote
I'm not sure what barrel length yet but nothing longer than 26". the 26 is what I'm planning on unless a shorter one is recommended. I'll be trying 130gr. from Berger, Sierra, Hornady, Swift and Nosler.
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Hockeynick39
Advanced Member



USA
4698 Posts

Posted - Feb 17 2016 :  06:11:47  Show Profile  Send Hockeynick39 an AOL message Send Hockeynick39 a Private Message  Reply with Quote
I personally wouldn't go below 22". Why are you not asking these questions of the barrel manufacturer or your gunsmith doing the barrel replacement?
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Zero333
Advanced Member



Canada
824 Posts

Posted - Feb 17 2016 :  18:52:02  Show Profile Send Zero333 a Private Message  Reply with Quote
Everyone I know shoots 150's with a 10 twist 270win.

Treat that trigger like it’s your first date, not like you’ve been married to it for 20 years.
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Hockeynick39
Advanced Member



USA
4698 Posts

Posted - Feb 18 2016 :  05:54:26  Show Profile  Send Hockeynick39 an AOL message Send Hockeynick39 a Private Message  Reply with Quote
quote:
Originally posted by Zero333

Everyone I know shoots 150's with a 10 twist 270win.



Hunting or target? The OP is also talking about a 270 WSM, not a standard 270 Win. I would use that as well unless I was going after sheep or antelope.
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