I picked up some surplus 5.56 bullets today at the gun show. I started doing some searches to find out what the armed forces load behind these puppies and it listed 24.7gr to 26.1 of WC 844 behind them. I was looking in my Hornady book and it doesn't make a reference to this powder. Is there a good source on cross reference for questions like this out there? Like an encyclopedia of powders?
Thanks for the help.