I have a 223AI bolt gun that I am about to start load work up. I am interested to see what powders are going to be best for me. I will be using winchester brass and cci 400 primers along with 75gr a max bullets. My oal is going to be 2.45 to the lands. I would like a temp stable powder. I have alliant AR-Comp on hand but I am not stuck on that single powder. Any advice would be appreciated.