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90 gr. Swift Scirocco

 
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  #1  
Old 08-21-2012, 07:14 PM
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90 gr. Swift Scirocco

Ive heard that its hard to get the 90gr. Scirocco to shoot out of a standard 1x10 twist in the .243....................What about the 1x9?

For those who shoot the 90gr. Scirocco what works for you..................and how does the bullet perform.?

G
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  #2  
Old 08-21-2012, 07:51 PM
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Re: 90 gr. Swift Scirocco

Going the wrong direction. IF the 90 grain will not stabilize at 1in10 it would be highly unlikely for it to improve by going to a faster twist.
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  #3  
Old 08-22-2012, 08:37 AM
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Re: 90 gr. Swift Scirocco

So I should go to a 1x12 or 1x14?????? I think your heading in the wrong direction
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Old 08-22-2012, 12:41 PM
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Re: 90 gr. Swift Scirocco

That is exactly what I am saying, but I think 1x12 would be plenty slow for a 90 grain 6mm bullet. If you think I am going the wrong way you might want to research the evolution of twist used by Remington for the .244/6mm.
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  #5  
Old 08-23-2012, 01:16 PM
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Re: 90 gr. Swift Scirocco

I heard that the standard .243 twist is 1x91/2, I think Berger sugjests a 1x9 for their 95gr and a 1x8 for their 105 the long Scirocco would need a faster twist than the 1x10 if it wont shoot in the 1x10 my rifle has a 1x9 twist and was told by Swift that the 90gr. Scirocco shoots best in a faster twist rate.........most guys I have talked to could not get them to shoot well in their standard factory barrels....................
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  #6  
Old 08-23-2012, 03:42 PM
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Re: 90 gr. Swift Scirocco

Rule of thumb.

Longer bullet needs faster twist rate.

Lighter bullet=shorter bullet, heavy bullet=longer bullet

90 gr Swift Scirocco is a long bullet for its calibre
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  #7  
Old 08-23-2012, 03:58 PM
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Re: 90 gr. Swift Scirocco

AGREED. But this post started out asking about 90 grain bullets, but somehow has morphed to 105's??? Moving on.
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