All the powders you list will work with the 5.56. I can attest to H4895 working with 55 gr and 77gr loads. My buddy makes his varmint loads with H335, excellent with a 50gr VMAX out of his Rem 700.What are the go to loads for 5.56 in a AR15? I've read Varget, H4895, Blc2 H335 are the go to powders. What about bullets? Really just punching paper and ringing steel.