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195 grain 7mm Berger - How Much Cartridge Will it Need?

 
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Old 12-11-2013, 01:01 AM
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Re: 195 grain 7mm Berger - How Much Cartridge Will it Need?

My thot's would be the 7mm Allen Mag would get the most out of it.

Just sayin'
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Old 12-11-2013, 01:34 AM
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Re: 195 grain 7mm Berger - How Much Cartridge Will it Need?

In order to send 195's at any velocity, You need the bullets first!!!
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Old 12-11-2013, 01:38 AM
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Re: 195 grain 7mm Berger - How Much Cartridge Will it Need?

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Originally Posted by supercrossbmx69 View Post
In order to send 195's at any velocity, You need the bullets first!!!
+1
and as long as the shelves are empty, they don't have to drum up business with new offerings.
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Old 12-11-2013, 05:31 AM
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Re: 195 grain 7mm Berger - How Much Cartridge Will it Need?

Quote:
Originally Posted by supercrossbmx69 View Post
In order to send 195's at any velocity, You need the bullets first!!!
True! Meantime, Matrix has 190s .284 Caliber Bullets Custom Built for Accuracy | Matrix Ballistics
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Old 12-11-2013, 08:57 AM
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Re: 195 grain 7mm Berger - How Much Cartridge Will it Need?

Matrix claims that a 1:9 twist will work with the 190gr bullets, and when you plug the numbers into Berger's calculator a 195gr is plenty stabilized (over 2.0) out of a 1:9 at any altitude and I tried it down to 2600fps.
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Old 12-11-2013, 10:23 AM
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Re: 195 grain 7mm Berger - How Much Cartridge Will it Need?

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Originally Posted by joeycoates View Post
Matrix claims that a 1:9 twist will work with the 190gr bullets, and when you plug the numbers into Berger's calculator a 195gr is plenty stabilized (over 2.0) out of a 1:9 at any altitude and I tried it down to 2600fps.
I must need a new computer. I get a 1.32 SG at 3000 fps with a 9 inch twist. It takes a 7 inch twist for me to get the numbers you are getting.
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Old 12-11-2013, 10:23 AM
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Re: 195 grain 7mm Berger - How Much Cartridge Will it Need?

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Originally Posted by joeycoates View Post
So do you guys thin a 1:9 would stabilize it or would the twist have to be more aggressive than that?
No, you will need an 8.5 twist @ minium, probably a 1:8 would be ideal if that is the only bullet you plan on shooting.

However, keep in mind that this bullet has been talked aout for 2 years now, and we still haven't seen it. I'm not holding my breath, and I'll just stick to my 180's. LOL
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