What are some go-to powders for 52 grain bullets in .223? I have on hand TAC and Re-15, but will pick up something else if it would be better suited for 52's.
Since you've got TAC I'd start there before buying anything else.
My general go-to is H335 but if you can get H322, CFE 223, AA 2230, or any number of others you should be in good shape.