Long Range Hunting Online Magazine


Go Back   Long Range Hunting Online Magazine > Hunting > The Basics, Starting Out


Reply

Drop chart HELP

 
LinkBack Thread Tools Display Modes
  #1  
Old 03-24-2011, 07:05 PM
tlk tlk is offline
Silver Member
 
Join Date: Apr 2008
Posts: 238
Drop chart HELP

Question: can I use only three or four distances to set up a drop chart with ballistics software to a high degree of correctness? Example: can I zero at 100, find my drop at say 300, 600 and 800 and then use a ballistics calculator to determine the drops (and ultimately a moa range card) for every 50 yds out to say 900 yds?

Is there any reason to burn the powder and time to do this manually? Any help would be greatly appreciated.
Reply With Quote
  #2  
Old 03-24-2011, 08:38 PM
Gold Member
 
Join Date: Jul 2009
Location: Idaho
Posts: 580
Re: Drop chart HELP

Well thats about the way we do it
but we go back out and shoot the chart to verfiy the numbers
ONce we get a load we chrono it shoot a few differant ranges and enter all that into the program get a chart out to 1000 yards then shoot the numbers to verify and adjust as needed
The most we have everbeen off is a click or two
retiredcpo
Reply With Quote
  #3  
Old 03-24-2011, 10:36 PM
Silver Member
 
Join Date: Mar 2010
Location: Spring, TX
Posts: 349
Re: Drop chart HELP

Quote:
Originally Posted by retiredcpo View Post
Well thats about the way we do it
but we go back out and shoot the chart to verfiy the numbers
ONce we get a load we chrono it shoot a few differant ranges and enter all that into the program get a chart out to 1000 yards then shoot the numbers to verify and adjust as needed
The most we have everbeen off is a click or two
retiredcpo

Yep, tried and true.
Reply With Quote
  #4  
Old 03-24-2011, 10:42 PM
Platinum Member
 
Join Date: Jan 2004
Location: Blackfoot, Idaho
Posts: 8,232
Re: Drop chart HELP

Yep! .
__________________
I may be the slowest guy on the mountain . . . . but . . . . I'm on the mountain!
Reply With Quote
  #5  
Old 03-25-2011, 06:44 AM
tlk tlk is offline
Silver Member
 
Join Date: Apr 2008
Posts: 238
Re: Drop chart HELP

So you guys are still shooting the entire range card for verification of data? I was under the impression (hoping really) that if I got three or four points in an arc each at a specific distances any point along the arc could be calculated with a standard fomula, and it would be all good with no need to verify. It's fine that it needs to be done, but what causes the delta between the math and the actual arc of the bullet?
Reply With Quote
  #6  
Old 03-25-2011, 07:16 AM
Gold Member
 
Join Date: Jul 2009
Location: Idaho
Posts: 580
Re: Drop chart HELP

Well I supose you could assume it was all good but we wont take a shot at an game animal unless we know our drop for the the shot
Now a coyotee or rock chuck we would take the shot.
Besides I like to shoot so dont mind shooting the chart
pratice makes you better
If the chart is close you wont burn very much ammo
one a round or two for each yardage
Go shoot it and make sure.
Sounds like you havbe never shot long range, Time behind the gun would help you out
Just my 2 cents
Retiredcpo
Reply With Quote
  #7  
Old 03-25-2011, 07:20 AM
Platinum Member
 
Join Date: Jul 2004
Location: Texas
Posts: 5,624
Re: Drop chart HELP

Quote:
Originally Posted by tlk View Post
So you guys are still shooting the entire range card for verification of data? I was under the impression (hoping really) that if I got three or four points in an arc each at a specific distances any point along the arc could be calculated with a standard fomula, and it would be all good with no need to verify. It's fine that it needs to be done, but what causes the delta between the math and the actual arc of the bullet?

You have to verify to be sure that the numbers are correct, After all it is only a formula and
a computer.

The cause for the delta is normally that the listed BCs are effected by velocity,twist rates, ETc
and are normally not correct from the manufacture.

You dont have to check every distance, but I would recommend at least two(Middle distance and
the max distance to be shot.

It does not matter what the BC and drop is, what matters most is the accuracy of the drop chart !

J E CUSTOM
__________________
"PRESS ON"
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes


Similar Threads for: Drop chart HELP
Thread Thread Starter Forum Replies Last Post
Help with NF drop chart ********** bigbuck General Discussion 7 07-27-2010 09:39 AM
Drop chart help JARHEAD1371 Rifles, Bullets, Barrels & Ballistics 0 10-01-2009 01:44 PM
Drop chart for 7MM WSM seischens Rifles, Bullets, Barrels & Ballistics 7 10-22-2008 10:38 AM
Drop chart ? HDTony Rifles, Bullets, Barrels & Ballistics 6 02-14-2008 11:30 PM
please help with drop chart bigsal5353 Rifles, Bullets, Barrels & Ballistics 7 03-26-2004 09:35 PM


All times are GMT -5. The time now is 01:40 AM.


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