IMR 4064, and the .308 Winchester should we wed in Holy Matrimony. If you cannot get a decent grouping with a .308, and 4064 you are a horrible shot! It is a medium burn rate extruded (stick) powder. It has been around for some time, and is one of the best known powders to use for nonmagnum 30 calibers.
I personally have used 4064 since I bought my very first 308, and it has been my go to for all my 308's. I use various powders like Varget, IMR 8208XBR, BL-C(2), etc but seems like the 4064 is…
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