Guns Like firearms themselves, there's a wide variety of opinions on what's the best gun.

Twist Rate

Old 02-23-2015, 06:26 PM
  #1  
Nontypical Buck
Thread Starter
 
stuckinthereeds's Avatar
 
Join Date: Feb 2003
Location: Helena Mt USA
Posts: 1,834
Talking Twist Rate

So I won a Stag AR-15 Model 2 from the NRA yesterday. I have never owned an AR before and know very little about them. Never the less, I'm super excited. But I have been doing some reserch and am wondering what twist rate means. The twist rate is 1/9th button rifled. Its a .223/5.56

Last edited by stuckinthereeds; 02-23-2015 at 06:39 PM. Reason: more information given.
stuckinthereeds is offline  
Old 02-23-2015, 06:55 PM
  #2  
Nontypical Buck
 
Join Date: Feb 2003
Location: Eastern wv
Posts: 2,775
Default

it'll probably shoot anything up to 70 grain bullets well, its one turn in 9 inches of barrel
here is the formula to determine bullet rpm
MV x (12/twist rate in inches) x 60 = Bullet RPM
so your shooting a 60 gr. bullet at 3100 fp
3100x(12/9=1.333) x 60=247,938 rpm's
should shoot any weight bullet well from 45 to 70 gr. as long as the bullets jacket can withstand the rpm's
RR
Ridge Runner is offline  
Old 02-23-2015, 08:44 PM
  #3  
Giant Nontypical
 
Sheridan's Avatar
 
Join Date: Dec 2007
Location:
Posts: 5,130
Default

Ridge explained it well..........here is some additional information;

http://www.gunnersden.com/index.htm....ist-rates.html
Sheridan is offline  
Old 02-23-2015, 10:14 PM
  #4  
Nontypical Buck
 
redgreen's Avatar
 
Join Date: Feb 2003
Location: Alberta Canada
Posts: 1,079
Default

You are lucky! I wish that they weren't so anal about anything resembling military here.
redgreen is offline  
Old 02-24-2015, 06:42 AM
  #5  
Nontypical Buck
 
Nomercy448's Avatar
 
Join Date: Oct 2009
Location: Kansas
Posts: 3,614
Default

Originally Posted by redgreen View Post
You are lucky! I wish that they weren't so anal about anything resembling military here.
Yeah... As fun as my Canadian buddies have tended to be, I just can't get over that communist crap - I like my handguns and AR's way too much!!

Wait... Let me rephrase myself...

I like my RIGHTS too much...
Nomercy448 is offline  

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
Trackbacks are On
Pingbacks are On
Refbacks are Off


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information -

Copyright 2021 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.