Long Range Hunting Online Magazine


Go Back   Long Range Hunting Online Magazine > Chatting and General Stuff > General Discussion

General Discussion Must wear red or OD green socks to participate. I can't see your socks, please be honest.


Reply

Help with NF drop chart **********

 
LinkBack Thread Tools Display Modes
  #1  
Old 07-26-2010, 02:24 PM
Platinum Member
 
Join Date: Jun 2009
Posts: 1,654
Help with NF drop chart **********

I recently shot a nice group at 752 Yards but my NF program had me 6- 1/2 inches low . My program called for 15 MOA Elevation so my question is how do I fudge my software to match up to the correct data for a 752 yard shot ? anotherwords how do I know what the additional 6-1/2 inces of adjustmant is? In terms of MOA ?


Thanks for your help in advance .

BigBuck
__________________
"Molon Labe"
IN DIXIE WE DON"T CALL 911 !
Reply With Quote
  #2  
Old 07-26-2010, 04:21 PM
Platinum Member
 
Join Date: Nov 2008
Location: SW Montana
Posts: 4,427
Re: Help with NF drop chart **********

I would triple check your input data then add/subtract FPS till you match, I'm begining to think the chrony can be a weak link. Berger BC's are GTG and your inputs should be right on so that leaves FPS.

More ranges and more awesome groups will help get it dialed in for the trajectory.
__________________
High Fence, Low Fence, Stuck in the Fence, if I can Tag it and Eat it, it's Hunting!

"Pain is weakness leaving your body"

Last edited by bigngreen; 07-26-2010 at 05:47 PM.
Reply With Quote
  #3  
Old 07-26-2010, 04:32 PM
Platinum Member
 
Join Date: Jun 2009
Posts: 1,654
Re: Help with NF drop chart **********

My crony is definately a "weak link " now . Thanks for your advice i'll check it again and plug in some FPS .

Bigbuck
__________________
"Molon Labe"
IN DIXIE WE DON"T CALL 911 !
Reply With Quote
  #4  
Old 07-26-2010, 04:43 PM
Miller Outdoors
 
Posts: n/a
Re: Help with NF drop chart **********

I start by tweaking the bullet BC until it matches. Then I test again at a couple different ranges to be sure it's consistent.
Reply With Quote
  #5  
Old 07-26-2010, 04:52 PM
Platinum Member
 
Join Date: Feb 2008
Location: IOWA
Posts: 1,864
Re: Help with NF drop chart **********

All I have ever done is change the FPS and not mess with the BC.
Might be half ass backwards thou. P ast 1000yards, might be better to fudge the BC.
The problem w/ the Nightforce ballistics is it does not allow G7 BC, which is alot more accurate for the Berger 210's than the G1 factor.
Reply With Quote
  #6  
Old 07-26-2010, 08:51 PM
Platinum Member
 
Join Date: Feb 2007
Location: Townsend, Montana.
Posts: 7,756
Re: Help with NF drop chart **********

Simple... and I do this with every rifle I set up for someone. I have done many 300 wins with 210 bergers. Your 752 yard data is at the perfect range.

I would use Bergers G1 BC for the 210 and I assume you are.

Open your NF program to the front page.

Click " Program Options"

then click " tradjectory Validation"

then enter the distance "752" under target distance.

then in the 3rd column under "impact pt +/- in. .... enter - 6.5

then hit apply.

It now has changed you velocity to match your drop. To check it, it should call for about 1 moa more up than it did for the same shot.

Done...! next time you will be spot on. I would check it at 1000 too.

Jeff
__________________

Last edited by Broz; 07-26-2010 at 08:57 PM.
Reply With Quote
  #7  
Old 07-26-2010, 10:36 PM
SPONSOR
 
Join Date: Feb 2007
Location: Buffalo, Wyoming
Posts: 1,647
Re: Help with NF drop chart **********

Quote:
Originally Posted by Broz View Post
Simple... and I do this with every rifle I set up for someone. I have done many 300 wins with 210 bergers. Your 752 yard data is at the perfect range.

I would use Bergers G1 BC for the 210 and I assume you are.

Open your NF program to the front page.

Click " Program Options"

then click " tradjectory Validation"

then enter the distance "752" under target distance.

then in the 3rd column under "impact pt +/- in. .... enter - 6.5

then hit apply.

It now has changed you velocity to match your drop. To check it, it should call for about 1 moa more up than it did for the same shot.

Done...! next time you will be spot on. I would check it at 1000 too.

Jeff
same thing I do... great advice and easy to do.
__________________
Lightforce Lights Dealer
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes


Similar Threads for: Help with NF drop chart **********
Thread Thread Starter Forum Replies Last Post
Drop chart HELP tlk The Basics, Starting Out 10 03-25-2011 04:35 PM
Drop chart help JARHEAD1371 Rifles, Bullets, Barrels and Ballistics 0 10-01-2009 01:44 PM
Drop chart for 7MM WSM seischens Rifles, Bullets, Barrels and Ballistics 7 10-22-2008 10:38 AM
Drop chart ? HDTony Rifles, Bullets, Barrels and Ballistics 6 02-14-2008 11:30 PM
please help with drop chart bigsal5353 Rifles, Bullets, Barrels and Ballistics 7 03-26-2004 09:35 PM

Current Poll
Are you on Facebook?
Yes - 46.38%
1,113 Vote
No - 19.54%
469 Votes
No, but I may join - 1.75%
42 Votes
No way, are you kidding? - 36.08%
866 Votes
Total Votes: 2,400
You may not vote on this poll.

All times are GMT -5. The time now is 08:51 AM.


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