Free: Contests & Raffles.
Varget is my first choice.
The first powder I used for .223, was Western Powders X-Terminator with 55gr v-max bullets. I hunt small game with it and target shoot. I found that 22gr gave me sub moa groupings. But I was a newbie and only bought 1lb. Just remember that depending on how much you want to reload depends on how much powder you use. I wish I would have bought as much of it as possible, because I have yet to see it since. It metered well and shot great. Whatever you use you will want to buy enough that you can have it on hand. Now, I have to go through and find out what powder grains I need for whatever powders I can find. Takes a lot of time. Good luck.