Long Range Hunting Online Magazine


Go Back   Long Range Hunting Online Magazine > Hunting > Long Range Hunting & Shooting

Long Range Hunting & Shooting Nightforce Optics


Reply

Wind Drift

 
LinkBack Thread Tools Display Modes
  #15  
Old 05-31-2006, 04:19 PM
Platinum Member
 
Join Date: Sep 2004
Location: on the rifle range in Utah
Posts: 2,723
Re: Wind Drift

[ QUOTE ]
Higher BC (heavier) virtually ALWAYS have longer time of flight, but will have less wind drift.

[/ QUOTE ]


You may be off on another tangent here I didn't catch but if you are stating (and you're probably not) that higher bc bullets have longer time of flights compared to lighter faster bullets than I would like point out that that is only true to short distances. At some point downrange, the lighter and lower bc bullet will not get to a target as fast as the slower, heavier, higher bc bullet will.

Take for instance the 40 grain 22 caliber bullet at mv of 4400 and compare it to the 80 grain 22 caliber bullet at a mv of 3400 fps. Although the 40 grainer starts off 1000 fps faster at the muzzle, it is going slower than the other bullet at the 1000 yard target. Differences in t.o.f. are less than 1 second but are still in favor of the high bc bullet winning the race to the 1k target.
__________________
Find it
Range it
Click it
Pull it
Dump it

If it's not far, it's boring.
Reply With Quote
  #16  
Old 05-31-2006, 04:24 PM
Silver Member
 
Join Date: Jan 2006
Location: Mississippi
Posts: 147
Re: Wind Drift

Good grouper you are correct who ever wins the race will drift less and drop less at that given distance. if you back up to 400 yd then your 40gr bullet wins and drifts less and drops less at 400 yds.
Dr B
__________________
Baylor

Three rules of Life: If you're too open-minded, your brains will fall out. Don't worry about what people think; they don't do it very often. Artificial intelligence is no match for natural stupidity.
Reply With Quote
  #17  
Old 05-31-2006, 04:28 PM
SPONSOR
 
Join Date: Dec 2004
Location: El Reno, OK
Posts: 1,930
Re: Wind Drift

[ QUOTE ]
you back up to 400 yd then your 40gr bullet wins and drifts less and drops less at 400 yds.
Dr B

[/ QUOTE ]

Might want to check your drift #s. I think you will be suprised!!!
Reply With Quote
  #18  
Old 05-31-2006, 04:30 PM
Platinum Member
 
Join Date: Feb 2005
Location: Nevada
Posts: 2,782
Re: Wind Drift

bjlooper,
You're right!!! and also would have the same energy. <u>The only thing</u> that would not be the same would be the MOMENTUM with is defined by Ballistic Explorer as: [ QUOTE ]
<font color="blue"> Momentum
An indication of a bullet's knockdown power is momentum. Doubling either the weight (mass) or velocity of a bullet doubles its momentum. <font color="green">Clearly it's energy that makes bullets deadly to game, </font> <font color="purple">yet it's momentum that knocks game off its feet or knocks metal targets over. </font> </font>

[/ QUOTE ]
__________________
-----------------------------

-----------------------------
HEBREWS 13:8
Jesus Christ the same yesterday, and to day, and for ever.

Our Lord Jesus said that as it was in the days of Noah and
also as it was in the days of Lot so it shall be in the days...
It's happening again!!! God sent to us His prophet, and His Word
to this generation and we once more are rejecting it as was prophesied!!!

---> As promised, God Sent His Prophet to us!
Reply With Quote
  #19  
Old 05-31-2006, 04:31 PM
Gold Member
 
Join Date: Nov 2004
Posts: 878
Re: Wind Drift

yep
Reply With Quote
  #20  
Old 05-31-2006, 05:50 PM
Platinum Member
 
Join Date: Dec 2001
Location: Mukilteo, WA
Posts: 1,091
Re: Wind Drift

[ QUOTE ]
If weight is added to a bullet and the shape remains the same, then the bc will go up because the bullet is getting longer while the shape is staying the same.

[/ QUOTE ]
It doesn't have to get longer. Fill the same jacket full of tungsten instead of lead and the BC will go up with no change in shape or length. The weight by itself will increase the BC since BC is a function of weight (and diameter and form factor). That's what he was saying.

With the same meplat, ogive and boattail, adding length in the shank changes the form factor very little and BC will go up pretty much in proportion to the weight. Of course the length allows you to use a longer ogive and boattail, etc, so you can improve the form factor while you're at it. But you don't have to in order to increase the BC.
Reply With Quote
  #21  
Old 05-31-2006, 06:33 PM
Sponsor
 
Join Date: Jun 2007
Location: North Idaho
Posts: 1,822
Re: Wind Drift

I have a customer that I set up a pair of balistic twins for. 1 is a 338 Lapua shooting 225 gr Accubonds @ 3000 fps, the other is a 6.5-284 shooting the Hornady 140 Amax @ 3000 fps. These two bullets fired both at 3000 fps also have identical BC. He has thus far shot out to 1148 yards using the same drop chart. All other things being equill BC and velocity will predict drop. Weight, form functions, diameter, etc directly bear on BC but singulary may not mean much as the case above a 225 grain bullet @ 3000 fps does not always shoot flatter than a 140 gr. While heavier slower bullets that have high BC's drop more than a lighter flatter faster shooting bullet alot of times, the higher BC bullet almost always has way less wind drift and to me that is the name of the game.
__________________
Shawn Carlock

www.defensiveedge.net
1-208-687-2659
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes


Similar Threads for: Wind Drift
Thread Thread Starter Forum Replies Last Post
wind drift pressman General Discussion 7 06-22-2012 09:08 AM
wind drift data??? northtoalaska Long Range Hunting & Shooting 2 04-30-2009 12:02 PM
Wind drift? mnhunter2 Long Range Hunting & Shooting 9 10-21-2008 10:43 AM
Wind Drift tikkaT3 General Discussion 6 02-17-2007 08:57 PM
wind drift???? flopduster Rifles, Bullets, Barrels and Ballistics 8 02-05-2004 01:10 AM

Current Poll
Do you archery hunt for elk?
YES - 32.00%
64 Votes
NO - 52.00%
104 Votes
Not yet, but I plan to. - 16.00%
32 Votes
Total Votes: 200
You may not vote on this poll.

All times are GMT -5. The time now is 03:36 PM.


Powered by vBulletin ©2000 - 2014, Jelsoft Enterprises Ltd.
Content Management Powered by vBadvanced CMPS
All content ©2010-2014 Long Range Hunting, LLC