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Amax bc?

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Unread 04-25-2012, 03:28 PM
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Join Date: Nov 2011
Location: Missoula, MT
Posts: 221
Amax bc?

I've seen data published stating that the BC of a 140gr 6.5mm A-max ranges from .55 up to .618. What is it really?
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Unread 04-25-2012, 03:43 PM
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Join Date: Jan 2012
Location: Hot Springs, South Dakota
Posts: 530
Re: Amax bc?

It looks like they made 1-3 versions of that bullet.

1. 1.506" long with the .618 BC

2. 1.375" long with the .55 BC

Just to make it more confusing, Hornady lists the current bullet with a .585 BC.

It's beyond my limited brain resources.
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Unread 04-25-2012, 05:08 PM
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Location: ND
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Re: Amax bc?

oh some where around .55-.618

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Unread 04-25-2012, 07:05 PM
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Join Date: Jan 2011
Posts: 2,206
Re: Amax bc?

The new Amax with the amp jacket works pretty good on the ballistics software with its listed .585 bc when started at 3k+ fps, the older style thinner jacket amax had listings of .595 and .618, they work ok by just plugging in .6, the 140 amp jacket bthp match works with .55 as it is just the new amax without a polymer tip.
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