Powders:
The .223 Remington is a reloader’s dream. Not finicky, it shoots well with a wide variety of powders, both extruded (stick) and granular (ball). Ask a dozen .223 shooters and you’ll probably get a dozen different powder recommendations. For the lighter bullets, H335 ball powder is a proven performer, and N133 shows outstanding accuracy. For 55gr to 60gr bullets, Benchmark, TAC, H4895, and AA2015 are excellent choices. For the 69gr and 77gr SMK, Sierra recommends VV N540 and N140 respectively. Finally, for the heaviest bullets, in the 80-90gr range, good choices include Reloader 15, VV N140, N550, and Varget. But there are many other good combinations. If you need a single, do-it-all powder for your .223 Rem loads, H4895, AA 2015, and TAC are all versatile and cost-effective. If you’re loading with a progressive press, you’ll find that ball powders such as H335, BLC-2, and TAC meter best.