Yep I know all about the military ammo and the inner workings of the armory but as I said it has been proven here and a few other forums that the LEE FCD is just an important tuning tool to a reloading bench as any other, I have worked decades proving this point, Controlling Powder Ignition Dwell can be manipulated with neck interference but the LEE FCD can fine tune PID in a very simple procedure, The old adage of "Bolt guns don't need a crimp " is outdated, with that being said you no you don't need to crimp as been proven over the years but for all the folks that have that mindset I can I can say is your missing out on a very valuable tool that cost's pennies compared to the some of the equipment folks buy in the quest for the most accurate ammo they can produce