I recently started reloading 223 using 55gr FMJ and Varget and using a Classic Lee Loader kit. I loaded 21.9 gr Varget as suggested as a starting load from the recipe card that came with the kit. This was my first time with a 223 and my 100 yard groups were nothing special but no problems with the rifle. I got a copy of Lee Modern Reloading 2nd ed. and saw that the same bullet and powder now required a starting load of 25.5 gr Varget. I wrote the Lee people and asked about the change. I was told that the kit recipe was based on 2011 Varget and the book data was based on 2017 Varget. Was it dangerous to use the light starting load of Varget? They seemed to work OK but I don't know the consequences of using light loads.