I'm about to work up a load for my 16" barrel 1-8" twist AR using 75gr Hornady A-Max, and was wondering what powder people have had the best results with for that combination or one similar to it. I've heard Varget is a good one but burns slower, I have access to H4895 and H322 and have heard some good things about both. Any advice is appreciated, this is my first time.