I have used everything mentioned in thread except the IMR powders.
I am now using Accurate Powder 2520 it is more accurate than varget my 2nd choice and has greater velocity. 22520 also meters quite well. Probably due the the size and shape of the grains case can be loaded with more powder. I am loading to NATO specs. for 556. which in this case is 25.5 gr. with 77 Nosler, cci450 primer.
Rifle has 16" barrel and Wylde chamber.
I am now using Accurate Powder 2520 it is more accurate than varget my 2nd choice and has greater velocity. 22520 also meters quite well. Probably due the the size and shape of the grains case can be loaded with more powder. I am loading to NATO specs. for 556. which in this case is 25.5 gr. with 77 Nosler, cci450 primer.
Rifle has 16" barrel and Wylde chamber.

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