ADI is one of the Major Manufacturers of Powder World Wide. This link is to ADI's Equivalent Page based on their Manufacturing of powders for the Powder Distributors. ADI makes powders to spec for Hodgdon/IMR/Win, Vectan, Norma, Vihtavuori, Accurate and Alliant as well as their own line which is not available in the US easily. This chart is meant to "Assist" Handloaders in replacing powders with equivalent powders sold under a different Distributor's Label. In
Some cases, the powders are exact matches, in others, they are as the warning indicates "within 5%" which is supposed to be considered the equivalent to the difference in "Lot to Lot" manufacturing tolerances.
http://www.adi-limited.com/handloaders/equivalents.asp
QuoteNOTE: These tables are only approximate, showing equivalent values within about 5%.
Actual burning rates can vary depending on the calibre, weapon, loading components and practices, as well as from powder lot to powder lot. As a consequence it must be understood that Australian Munitions cannot accept any responsibility for the use of this information in any way.
(This Post will also be made in the 'Other Caliber' Reloading Section for easy reference as the link covers ALL the powders Manufactured in ADI's plants)