The Firing Line Forums

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

Reply
 
Thread Tools
Old December 7, 2013, 09:09 AM   #1
tpcollins
Senior Member
 
Join Date: February 18, 2009
Location: SE Michigan
Posts: 445
Which side of the JBM Stability range is best?

The preface for the JB Stability program suggests a range of 1.3 to 2.0 for optimum stability. I have read elsewhere that a 1.4 stability was best.

So is the lower end of this scale better than the higher end, or it doesn't matter as long as it falls somewhere in between? Thanks,
__________________
What direction did that last shot at Kennedy come from?
tpcollins is offline  
Old December 7, 2013, 09:29 AM   #2
Brian Pfleuger
Staff
 
Join Date: June 25, 2008
Location: Central, Southern NY, USA
Posts: 18,791
Which side of the JBM Stability range is best?

IIRC, 1.4 is minimum for hunting accuracy, 1.6 minimum for target accuracy. No sense in being much over 1.6, I wouldn't think. Would only serve to exaggerate minor imperfections.
Brian Pfleuger is offline  
Old December 8, 2013, 12:27 PM   #3
44 AMP
Staff
 
Join Date: March 11, 2006
Location: Upper US
Posts: 11,820
You are asking a very specific question in a general forum, and it would help readers a lot if some explanation of what you are talking about was included.

I see this often, with lots of things. Those people involved in what you are already know what you are talking about, but the rest of us don't. A little explanation allows the casual reader to decide if the topic is something they would like to learn more about, or if further research would be a waste of time, for them.
__________________
All else being equal (and it almost never is) bigger bullets tend to work better.
44 AMP is offline  
Old December 14, 2013, 12:13 PM   #4
Bart B.
Senior Member
 
Join Date: February 15, 2009
Posts: 5,380
Benchresters shooting those tiny groups typically use a muzzle velocity and barrel twist to spin bullets just barely fast enough to stabilize them all the way to the target 300 yards downrange. An atmospheric change (temperature, mainly) means they have to adjust their powder charge a click or two on the measures used to meter them directly into cases. Spinning bullets too fast means those microscopically more unbalanced than others will miss the group center by 1/100th inch or more; and that's a no-no in group shooting.
__________________
US Navy Distinguished Marksman Badge 153
Former US Navy & Palma Rifle Team Member
NRA High Power Master & Long Range High Master
NRA Smallbore Prone Master
Bart B. is online now  
Reply

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 07:14 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
This site and contents, including all posts, Copyright © 1998-2014 S.W.A.T. Magazine
Copyright Complaints: Please direct DMCA Takedown Notices to the registered agent: thefiringline.com
Contact Us
Page generated in 0.06511 seconds with 9 queries