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Bucking the wind better BC or weight ?

 
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  #8  
Old 10-16-2004, 04:30 PM
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Re: Bucking the wind better BC or weight ?

That's a given.
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Old 10-16-2004, 05:10 PM
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Re: Bucking the wind better BC or weight ?

It seems that the 7mm 180gr bullet would be the one to use , more energy , less drift and drop and probably less recoil.

Was their realy a quiestion here or were you just pointing out to use 30 cal guys that the 7mm is a better choice?

The 7mm and .264 deffinatly have the better BC bullets for the long range shooting but I still love the 30's
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  #10  
Old 10-16-2004, 05:21 PM
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Re: Bucking the wind better BC or weight ?

Oh just trying to decide between a 7wsm and 300win mag. Then there is always the 300rum...but if I am going to burn that much powder I'd rather burn it to push a 300smk out of a 338lapua.
[img]images/icons/grin.gif[/img]

But the question is can you get 3000 from a 300win 210berger combo or 3000 from a 7wsm 180 berger combo... 27" rock or schneider barrel on each.

[ 10-16-2004: Message edited by: trader388 ]
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Old 10-16-2004, 06:04 PM
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Re: Bucking the wind better BC or weight ?

Try a compromise cartridge - 7mmRUM [img]images/icons/smile.gif[/img]
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  #12  
Old 10-16-2004, 06:22 PM
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Re: Bucking the wind better BC or weight ?

7rum - case is too tall to fit anything into the mag while seating out the bullets.
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  #13  
Old 10-16-2004, 07:33 PM
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Re: Bucking the wind better BC or weight ?

I think the issue of having to seat the bullet farther than normal into the case is much over-rated. The issue is one of lost case capacity but if you actually do a calculation, nothing significant is lost.
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  #14  
Old 10-16-2004, 09:35 PM
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Re: Bucking the wind better BC or weight ?

Well, color me stupid! I thought that BC was a function of the shape of the bullet and it's effect on drag and how quickly the bullet slows down along it's axis of travel. The weight is a function of it's volumn and the density of the material it is made of.

Given two bullets with the exact same shape, one made of lead and one of copper, would they not have the same BC?

If fired at the same velocity, not pressure, would they not drift the same?

If loaded to the same pressure, would the copper bullet not travel faster because it accelerated quicker? Would this not lead to less drift?

If you made another two bullets, one out of lead and one out of copper, that had the same ogive and boat tail, and weighed the same, wouldn't the copper bullet be longer and have a heigher BC?

Dazed and confussed?!?
Rick
[img]images/icons/confused.gif[/img]

-edited for misssssspelling

[ 10-17-2004: Message edited by: RBrowning ]
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