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6.5 twist requirements

 
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  #8  
Old 07-22-2005, 01:20 PM
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Re: 6.5 twist requirements

Kirby...understood [img]/ubbthreads/images/graemlins/wink.gif[/img]

The 1:9 is even working in a couple 6.5WSSM;s that i know of...even with the older Loooong Amax.

would have had one in the pic, but i broke the damn tip off when setting up the pic [img]/ubbthreads/images/graemlins/frown.gif[/img]

JB
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  #9  
Old 07-22-2005, 06:37 PM
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Re: 6.5 twist requirements

JB
I'd be surprised if the 142WC shot well from a 1:9 at Bodines. Regardless of Velocity. The bullet clearly has a longer bearing surface than the others, but weighing the same for length. So it's specific gravity must be lower. At an elevation of ~1200ft ASL, 1:9, this bullet looks -barely stable- to me. I'd be interested enough to send a box to you or Boyd. Maybe you could load up some for 1k testing. If they work in a 6.5/284 or WSSM there, I'll order a bunch more. Let me know
I happened on a few 1:8.5 Border barrels for my still unfinished 6.5/WSSM. So I'm curious. I got the impression from Boyd that 1:9 was not ideal.
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  #10  
Old 07-23-2005, 02:35 PM
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Re: 6.5 twist requirements

Mike....here is this from Boyd...

Mike.I have shot the 140 A-Max that call for a 1-7.5 twist out of my
6.5 Heaton 9 twist at around 2900fps down to about 40 degrees at Mifflin
with JB1000 there.Jasons words were (I thought you said it did'nt shoot
at 100 yards)I think a 9 would be enough if you did'nt try to shoot
them in the artic [img]/ubbthreads/images/graemlins/laugh.gif[/img] ...I would be interested in trying the wc 142.I
know he made me some 120's to try that shot well.But not any better than
anything I have quick access too.The old 140A-Max shoots like a house a
fire out of both my 6.5's.Saving them for critters though...Boyd
-------------------------------

Now me:
BTW -- Richard sent me some 142's but they were too long for me to shoot -- will be way down in my powder column -- boyd's 6.5 may be better set up to handle these as they have the same bearing surface as the new 140amax [img]/ubbthreads/images/graemlins/wink.gif[/img] (which i also cant shoot)

JB
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  #11  
Old 07-23-2005, 04:40 PM
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Re: 6.5 twist requirements

I'll get up with Boyd & send some for a test(When I get off nightshift). I do really believe the the 140AMax, with it's plastic tip, is completely different from a 142WC RBBT ULD, when it comes to stability.
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