I don't remember the author ( gun writer) who published it, but I remember reading it on one of the websites..
When Varget was scarce, 4320 was recommended as a viable replacement..
it was available, was close to the same burn rate as Varget, to the tune of stating one could start off with starting loads of the two powders interchangeably...
IIRCm the site was like the 6BR web site....
I've found it pretty darn accurate and not real finicky, like most of the older IMR powder lines...
burn rates for 4064, 4895, and 4320 are pretty darn close...4320 being the slower of the three...
it shines real good in the 22.250, 243, 260, 7/08 from personal experience...
in the 223 with heavier bullets is a darn good choice also....
