I googled and found that there are a lot of threads on IMR 4064 vs Accurate 4064. It is definitely not the same powder and burn rates are slightly different. If it were me I would grab a few pounds and do a load workup using the Accurate load data charts.
https://www.accuratepowder.com/wp-content/uploads/2011/01/accurate_load_data_3.5.pdf
edit - looks like limited load data available, what cartridge you planning on using it in
https://www.accuratepowder.com/wp-content/uploads/2011/01/accurate_load_data_3.5.pdf
edit - looks like limited load data available, what cartridge you planning on using it in
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