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ballistic coefficient questions . 6.5 mm bullets

 
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  #50  
Old 01-16-2013, 04:47 AM
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Location: Copper Basin, Alaska
Posts: 461
Re: ballistic coefficient questions . 6.5 mm bullets

Which 140 Berger? Ill be starting a 140 at around 2700 fps . I see they have a heavy jacket target bullet. . Any idea if its slower opening than the hunting VLD in 6.5 ?
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  #51  
Old 01-16-2013, 10:32 AM
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Location: Gillette, WY
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Re: ballistic coefficient questions . 6.5 mm bullets

Quote:
Originally Posted by MontanaRifleman View Post
I think the bullet will be less than 1.6. I'm guessing 1.51 0r 1.52 using that and 3000' elevation for Eastern Montana and 3300 fps, I'm showing a SF of 1.51, good to go if they're hunting bullets.

I was rolling with a pure Scientific Wild Ass Guess on length.

Here is All the info I have right now:

Technical Information

Caliber: 264 Caliber, 6.5mm
Bullet Diameter: 0.264
Bullet Weight: 140 Grains
Bullet Length: Not Available
Bullet Style: Low Drag Hollow Point Boat-Tail Max
Bullet Coating: Non-Coated
Minimum Barrel Twist: 1:7"

Ballistics Information
Ballistic Coefficient: Coming Soon...
Sectional Density: 0.287


Go figure... all the info we need is.... not there. On the other hand the Description does say Match/Tactical/Hunting.....


t
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  #52  
Old 01-16-2013, 01:19 PM
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Join Date: May 2008
Location: South of Canada and North of Wyoming
Posts: 5,954
Re: ballistic coefficient questions . 6.5 mm bullets

Quote:
Quote:
Originally Posted by bigngreen View Post
I saw that, I'm simply saying that one should try a bullet and see first hand how it functions in their situation. I shoot and trap coyotes all winter for fur if the price is right so I shoot two bullets depending on price, one for fur and one for spectacular smack downs. For fur I load a 140 Berger at 3340 and for blowing a hole in them you can see through I shoot a 110 TTSX at 3600fps. The Berger simply opens slow on that light of an animal and the TTSX opens easy and fast and a coyote just can't hold it which is quite entertaining
I would have thought the Bergers would leave the big hole and the TTSX's smaller holes. Interesting.
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  #53  
Old 01-16-2013, 01:21 PM
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Join Date: May 2008
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Re: ballistic coefficient questions . 6.5 mm bullets

Quote:
Quote:
Originally Posted by Outlaw6.0 View Post
I was rolling with a pure Scientific Wild Ass Guess on length.

Here is All the info I have right now:

Technical Information

Caliber: 264 Caliber, 6.5mm
Bullet Diameter: 0.264
Bullet Weight: 140 Grains
Bullet Length: Not Available
Bullet Style: Low Drag Hollow Point Boat-Tail Max
Bullet Coating: Non-Coated
Minimum Barrel Twist: 1:7"

Ballistics Information
Ballistic Coefficient: Coming Soon...
Sectional Density: 0.287


Go figure... all the info we need is.... not there. On the other hand the Description does say Match/Tactical/Hunting.....


t
Yeah, I figured they were at the Shot Show.

We could always make up a BC... .75 sound good to me
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  #54  
Old 01-16-2013, 04:40 PM
Edd Edd is offline
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Join Date: Jan 2011
Location: Tulsa
Posts: 873
Re: ballistic coefficient questions . 6.5 mm bullets

The BC is estimated to be .600.
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  #55  
Old 01-16-2013, 04:55 PM
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Join Date: Feb 2010
Location: Gillette, WY
Posts: 2,393
Re: ballistic coefficient questions . 6.5 mm bullets

Quote:
Originally Posted by Edd View Post
The BC is estimated to be .600.

I sure hope it's better than that... with their G1's running above normal in all other calibers, I was hoping for .625-.650


t
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  #56  
Old 01-16-2013, 10:29 PM
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Join Date: May 2008
Location: South of Canada and North of Wyoming
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Re: ballistic coefficient questions . 6.5 mm bullets

Quote:
Quote:
Originally Posted by Outlaw6.0 View Post
I sure hope it's better than that... with their G1's running above normal in all other calibers, I was hoping for .625-.650


t
With the 130's showing an estimated .56 BC, it's doubtful the 140's will increase to more than .6. In fact, a .04 jump for 10gr increase in mass is probably optimistic.
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