The Firing Line Forums

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

Reply
 
Thread Tools Search this Thread
Old September 14, 2014, 04:30 PM   #26
Bart B.
Senior Member
 
Join Date: February 15, 2009
Posts: 8,927
I just read post 10; again.

Maybe some others should do so. Maybe for the first time.
Bart B. is offline  
Old September 14, 2014, 05:16 PM   #27
Jim Watson
Senior Member
 
Join Date: October 25, 2001
Location: Alabama
Posts: 18,490
Quote:
OK, bullets are groove diameter, as I thought.
Well, yes, in America, usually, with jacketed bullets, mostly.

There was a European school of thought that said the grooves ought to be deep enough to give the metal displaced by the lands someplace to go. Groove diameter greater than bullet diameter. I don't know if they still do that; I find SAAMI specs but not CIP.

Modern American cast bullets are recommended to be slightly larger than groove diameter for a good seal and minimal leading with hard alloys.
Jim Watson is online now  
Old September 14, 2014, 06:18 PM   #28
Bart B.
Senior Member
 
Join Date: February 15, 2009
Posts: 8,927
I've got best accuracy with 30 caliber bullets being .0005" to .0022" larger than a barrel's groove diameter.
Bart B. is offline  
Old September 14, 2014, 11:50 PM   #29
FrankenMauser
Senior Member
 
Join Date: August 25, 2008
Location: In the valley above the plain
Posts: 13,403
Quote:
I just read post 10; again.
You should probably work on that memory loss. I hear that B vitamins, Ginseng, Vitamin C, Vitamin E, and beta carotene are the way to go.
__________________
Don't even try it. It's even worse than the internet would lead you to believe.
FrankenMauser is offline  
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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 05:20 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
This site and contents, including all posts, Copyright © 1998-2021 S.W.A.T. Magazine
Copyright Complaints: Please direct DMCA Takedown Notices to the registered agent: thefiringline.com
Page generated in 0.03084 seconds with 10 queries