I have two ARs. One is an M4 Carbine with a 16" 1 in 7 twist barrel. The other is an A2 with a 20" 1 in 9 twist barrel. I am going to start reloading some of the buckets of .223 brass I have and would like to build one load that is sufficient for both guns. I'm not looking for bench loads or any type of serious target load, just something that is decent for both guns. I've read a lot of recommendations of the 62gr for the 16" but am unsure of how well it'll work in the A2. I'll most likely be using H335 for the powder but am open to suggestions on that as well as primers. Ideally I would like a multi-caliber powder that I can also use for .308 and 30-.06 for my FAL, M1A and 17 or so Garands. FWIW I plan on utilizing my Dillon 550b once I work up the load. JimA Wanna kill these ads? We can help!