Thread: AR-15 pistol or SBR barrel length?
View Single Post
Old 10-07-2012, 07:02   #2
happie2shoot
Senior Member
 
Join Date: Jan 2008
Posts: 105
hope this helps

http://www.ballisticsbytheinch.com/223rifle.html

http://www.accuratereloading.com/223sb.html
happie2shoot is offline   Reply With Quote