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Re: Bullet weight and barrel twist ?:
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Picture of ricciardelli
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It is not the bullet weight that determines the twist ratio. It is the bullet length, caliber and velocity that determines this.

http://stevespages.com/page8e.htm
 
Posts: 3282 | Location: Saint Marie, Montana | Registered: 22 May 2002Reply With Quote
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Picture of Dutch
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I'd also look at neck tension, but poor shooting at full pressure makes me also suspect uneven locking lugs or partial contact on a recoil lug (doesn't Tikka have that funny round locking lug arrangement?). Anyway, something is not bearing evenly, seems like. JMO, Dutch.
 
Posts: 4564 | Location: Idaho Falls, ID, USA | Registered: 21 September 2000Reply With Quote
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It is not the barrel twist. I have a 30 cal. Kostyshyn barrel that shoots 150, 165, and 180 bullets all MOA with different brand bullets, powders, etc.

Just for test: try a moderately loaded 180 bullet over a medium burn rate powder, like IMR4064. See what happens.
 
Posts: 7906 | Registered: 05 July 2004Reply With Quote
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