ingwe
Varget has never worked very well with lighter bullets in the 223 AI in my experience
Tac and Benchmark are the ones I would be looking at. Both are great but I have came to prefer benchmark for 55 grainers and below and tac for the heavier bullets. Benchmark is the faster of the two in burn rate and I personally feel it works better with the lighter bullets, also It's an extreme powder and I've had it keep good manners from the upper 90s to 20 degrees or a little lower.
Either will serve you well
