ArizonaShooting.com

"The #1 Resource for Shooters in Arizona!"
It is currently October 23rd, 2017, 4:20 am


All times are UTC - 7 hours


Custom Search





Post new topic Reply to topic  [ 5 posts ] 
Author Message
 Post subject: Trajectory Help
New postPosted: March 17th, 2017, 3:17 pm 
Offline
AZS Regular
AZS Regular

Joined: July 5th, 2011, 9:43 pm
Posts: 107
Ok, here’s a question for someone smarter than me (which isn’t saying much).

“A friend of mine” has a .308 that is zeroed at 100 yds with 168gr match king. I’ve got the data I need out to however far… I also have some 147 ball that I goof around with, let friends/family shoot for fun, etc… I have the data for that round as well, but want to keep the rifle zeroed for the 168. Ive got the velocity for each.

My question is with the rifle zeroed at 100 for the 168., how do I determine the given trajectory for the 147.
I know this cant be all that complicated!
Thx in advance!

Matt


Top
 Profile  
 
 Post subject: Re: Trajectory Help
New postPosted: March 17th, 2017, 6:38 pm 
Offline
AZS Addict
AZS Addict

Joined: June 17th, 2008, 12:05 pm
Posts: 729
Get the Shooter App by Sean Kennedy. Input how high or low the 147 gr. is at 100 yards. The App will do the calculation for any given range.
You just have to be able fill in all the data the App asks for. If you do not have a Kestrel, the App can get real time weather data from the nearest
Weather Underground station if you have 3 or 4G service where you are shooting.

Dogslayer


Top
 Profile  
 
 Post subject: Re: Trajectory Help
New postPosted: March 17th, 2017, 9:10 pm 
Offline
AZS Regular
AZS Regular

Joined: June 26th, 2005, 2:22 pm
Posts: 206
Location: Cortez
Try this one. Pretty good for free.

http://www.mega.nu:8080/traj.html

They have another that includes spin drift if you want to get that finite.

Thank you,
Mr.Smith


Top
 Profile  
 
 Post subject: Re: Trajectory Help
New postPosted: March 18th, 2017, 6:34 am 
Offline
AZS Regular
AZS Regular

Joined: July 5th, 2011, 9:43 pm
Posts: 107
Outstanding, Thank you both!!!


Top
 Profile  
 
 Post subject: Re: Trajectory Help
New postPosted: March 18th, 2017, 8:22 am 
Offline
AZS; Woohoo!
AZS; Woohoo!
User avatar

Joined: November 5th, 2009, 9:41 pm
Posts: 1543
Location: Tucson
Also overlay both rounds traj's and see if there is a easy sighting/aiming point. I had a .243 that sighted in at 300 had every 100 up or down 6" either way, great for quick shots, 100 down 12", 400 up 6", 300 dead on

_________________
He who changes carry firearms and holsters as he does his underwear, will need to change his underwear if he survives his first gunfight!


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 5 posts ] 


All times are UTC - 7 hours


Who is online

Users browsing this forum: No registered users and 3 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  


Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group