It is not! Please do some honest research prior to posting such mis-infomation. The National Shooting Sports Foundation (NSSF) is the parent oganization for the Sporting Arms and Ammunition Manufacturers Institute (SAAMI) which publishes ammunition standards under the wing of the American National Standards Institute (ANSI). SAAMI has been in existance since 1926.
Not the NSSF. You are probably thinking of Americans for Gun Safety.