The Firing Line Forums

Go Back   The Firing Line Forums > The Hide > The Art of the Rifle: General

Thread Tools
Old August 31, 2015, 12:52 AM   #1
Pond, James Pond
Senior Member
Join Date: July 12, 2011
Location: Top of the Baltic stack
Posts: 4,230
Disparity in calculator results.

I've been playing around with B.C. values in Strelok to try and emulate my .223's range performance of 20" low at 300m on a 100m zero. I have come close using a B.C. of .270.

Meanwhile I tried the same thing with Berger's online calculator but needed a B.C. of .220 to mimic my range shooting. The only difference between the two calculators is that Bergers ask for altitude.

Could this account for the difference?
You cannot wake someone who is pretending to sleep. Stop pretending. Wake up.
Freedom: Please enjoy responsibly.
Any idea that relies on murder for its survival in intrinsically weak.
Pond, James Pond is online now  
Old August 31, 2015, 07:09 AM   #2
Senior Member
Join Date: August 10, 2000
Location: WI
Posts: 1,121
I've played with Strelok in the past, and found it's not very accurate. I use either JBM or Applied Ballistics.
A plan is just a list of things that doesn't happen.
bedlamite is offline  
Old August 31, 2015, 07:37 AM   #3
Senior Member
Join Date: November 18, 2005
Location: On the Santa Fe Trail
Posts: 5,809
A ballistics program is only as accurate as the information you give it. Strelok asks for altitude under the "weather" button on my screen. I also agree that it isn't as accurate as JBM, but it is easier to use in the field on my android phone than JBM.
NRA Life Member
The Truth About Guns
taylorce1 is offline  
Old September 1, 2015, 05:39 PM   #4
The Big D
Join Date: July 19, 2015
Posts: 84
Altitude makes a big difference. What the OP is describing is very possible.

I've never seen more than about 1/2 click difference between JBM and Strelock when properly configured including altitude. IMO both are very usable.
The Big D is offline  

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

All times are GMT -5. The time now is 01:48 AM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2015, vBulletin Solutions, Inc.
This site and contents, including all posts, Copyright © 1998-2015 S.W.A.T. Magazine
Copyright Complaints: Please direct DMCA Takedown Notices to the registered agent:
Contact Us
Page generated in 0.07130 seconds with 9 queries