Long Range Hunting Online Magazine


Go Back   Long Range Hunting Online Magazine > Hunting > Extreme Long Range Hunting & Shooting (ELR)

Extreme Long Range Hunting & Shooting (ELR) Over 1,000 Yds.


Reply

ERL Ballistics 'Truing' help

 
LinkBack Thread Tools Search this Thread Display Modes
  #8  
Old 07-04-2012, 08:28 AM
Platinum Member
 
Join Date: Nov 2008
Location: SW Montana
Posts: 4,529
Re: ERL Ballistics 'Truing' help

What value is your scope tracking at?
__________________
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"
Reply With Quote
  #9  
Old 07-04-2012, 10:04 AM
Bronze Member
 
Join Date: Jun 2009
Posts: 84
Re: ERL Ballistics 'Truing' help

Thanks for the advice Eaglet! I did a similar thing by shooting groups at 600, 800, and 1000 and that's how I came up with using 2,970 fps in the program. I also appreciate the benefit of the doubt on the group size! I'm going to take your advice and set up a target frame at 1,200 and shoot a few groups and see how things go. As far as how my scope tracks, I tested it for 30 MOA using a tall target test at 100 yards and it was giving me 1 percent error. This could also be contributing to some issues at longer ranges, and I don't know if my scope has tracking issues at the end of it's adjustment range. I've got some testing to do for sure. Thanks for your help guys!
Reply With Quote
  #10  
Old 10-17-2012, 08:18 PM
Silver Member
 
Join Date: Oct 2004
Location: USA, ohio
Posts: 263
Re: ERL Ballistics 'Truing' help

"Truing" your ballistic software

“Lowlight”
You can calibrate most software and is simple enough too do.
Some of the elements in the video “Magpul” are correct for other software, like actually shooting to a range that puts the round around 1300fps. (example)
The steps are simple enough, calibrate your scope and if necessary adjust the software using the sight offset, click value, etc. This will work with most software to include the iPhone Apps.
Then, calculate actual drop. You can start at 300 yards to begin. At this range you can adjust your BC if necessary. The BC will move based on the rifle shooting it. For example BulletFlight has an option in the utilities area to adjust BC based on Drop. it will give you a new G1 or G7 which you can then input into your data section.
Lastly you can calibrate the drop out to 800 yards like the video. Checking at distance is the final step, but you should have at least choreographed your load to start with, if you haven't then some software does have functions to adjust it based on drop.
Certain software has a DK function to bend the curve, this is used in place of adjusting the BC or MV, so you can do it a number of ways with a number of different software solutions, not just the Horus. Remember he was hired by Horus in the beginning to work and sell Horus methods and products, so of course they are not going to inform you of other methods.
Calibrating the system like above I have taken software like Field Firing Solutions and Patagonia LB3 out to distances beyond 2000 yards with very successful hit rates. Inside 1500m the first round hits where more consistent than when you didn't do it, and at 1000 yards and in it was too easy with a rifle like a 338LM.
The system calibration should be:
1. Muzzle Velocity using a chronograph
2. Scope calibration to at least 48"
3. Drop to 300 yards to tune with then
4. Drop to to 800 yards to fine tune.
__________________
=====================================
FREE Ballistic calculator & Printable targets.

http://sites.google.com/site/freeballisticcalculator/
Reply With Quote
  #11  
Old 10-18-2012, 12:11 AM
Bronze Member
 
Join Date: Jun 2009
Posts: 84
Re: ERL Ballistics 'Truing' help

Quote:
Originally Posted by Ring View Post
"Truing" your ballistic software

“Lowlight”
You can calibrate most software and is simple enough too do.
Some of the elements in the video “Magpul” are correct for other software, like actually shooting to a range that puts the round around 1300fps. (example)
The steps are simple enough, calibrate your scope and if necessary adjust the software using the sight offset, click value, etc. This will work with most software to include the iPhone Apps.
Then, calculate actual drop. You can start at 300 yards to begin. At this range you can adjust your BC if necessary. The BC will move based on the rifle shooting it. For example BulletFlight has an option in the utilities area to adjust BC based on Drop. it will give you a new G1 or G7 which you can then input into your data section.
Lastly you can calibrate the drop out to 800 yards like the video. Checking at distance is the final step, but you should have at least choreographed your load to start with, if you haven't then some software does have functions to adjust it based on drop.
Certain software has a DK function to bend the curve, this is used in place of adjusting the BC or MV, so you can do it a number of ways with a number of different software solutions, not just the Horus. Remember he was hired by Horus in the beginning to work and sell Horus methods and products, so of course they are not going to inform you of other methods.
Calibrating the system like above I have taken software like Field Firing Solutions and Patagonia LB3 out to distances beyond 2000 yards with very successful hit rates. Inside 1500m the first round hits where more consistent than when you didn't do it, and at 1000 yards and in it was too easy with a rifle like a 338LM.
The system calibration should be:
1. Muzzle Velocity using a chronograph
2. Scope calibration to at least 48"
3. Drop to 300 yards to tune with then
4. Drop to to 800 yards to fine tune.
Thank you ring! I really appreciate it!
Reply With Quote
Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes


Similar Threads for: ERL Ballistics 'Truing' help
Thread Thread Starter Forum Replies Last Post
"Truing" Ballistics Programs, Methods and Suggestions BigBboy25 Long Range Hunting & Shooting 5 09-04-2012 09:32 AM
Truing a Savage LA CaptBeach Gunsmithing 2 11-12-2011 02:02 PM
Cost of rebarreling and truing avfromvt Long Range Hunting & Shooting 14 07-23-2011 11:36 PM
My action truing jig. bigngreen Gunsmithing 14 06-27-2010 01:00 AM
Truing or squaring an action BrokenHorn General Discussion 8 03-08-2006 06:27 AM


All times are GMT -5. The time now is 01:06 AM.


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