Well I've burned through my first few pounds of win 748 for .223. Boy that didn't take long. I might have to invest in a faster press just to keep up with the AR, that thing gets hungry. I was going to give Tac a try because it seem's to be a big hit with others loading .223. But then I ran across the wc844 military powder which would add to my savings. So has anyone used this powder before and how did you like it. I'm loading mostly 55gr pinking stuff in a 16" ar but would like to load some 77g SMK's also. Thanks for your help.