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7 STW with VV 570

 
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  #8  
Old 12-05-2012, 04:01 PM
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Re: 7 STW with VV 570

Quote:
Originally Posted by gerryb View Post
That sounds like a mild load another guy shoots that shoots the 180 bergers with that same 81.5 grains. what velocity are you getting with the 168.
Another reason is I have a scope with a custom reticle designed for .617BC at 3285fps. with lines to 800yards
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  #9  
Old 12-05-2012, 10:38 PM
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Re: 7 STW with VV 570

jbroadnax:

Where did you find the data you posted for the 7mm STW using VV570. I do not have a VihtaVuori reloading manual. There is a gun show in Albuquerque this weekend, and might pick up some VV570. Thanks.
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  #10  
Old 12-06-2012, 07:31 AM
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Re: 7 STW with VV 570

I got the info from friends at Mcwhorter rifles. N570 was specifially designed for overbore cartridges so it is great in the 7 ultra. 300 ultra, stw, and others.
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  #11  
Old 12-06-2012, 07:49 AM
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Re: 7 STW with VV 570

3300 fps with a 180 class is damn stout for a 7stw; you must be using a loooong barrel to get there. I have seen 3100 fps or so with that weight range and that's it with 24-26" pipes.
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  #12  
Old 12-06-2012, 09:12 AM
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Re: 7 STW with VV 570

my new one is mcwhorter 7 STW making load with 180. i will try the 168 load in my other one
thanks
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  #13  
Old 12-08-2012, 06:10 PM
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Location: NSW, Australia
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Re: 7 STW with VV 570

Sorry I cant help with any loads as I only shoot a 7mm WSM. I was wondering if any of you shooting these 180s at very high velocities have had them start to blow apart from high rotational speeds? If so, what sort of speed and twist rate did they start to blow apart at?
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