every FCD comes with instructions on how to use them. I use crimps on everything I shoot. Also worked for a manufacturing Co. We were required to crimp . Just like everything in life a little is good dosn't mean a whole lot is better.. Not Judging Just saying be careful. After all we all want the same thing . To have the best accuracy and to be safe to enjoy and to share.
Last edited by Caveman4570; February 26, 2012 at 01:01 AM.