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.
(Cross Posted for ease of reference from '10mm Reloading' Section
In my studies some of their powders are just close to what is listed in performance but not equal to that by volume and weight yields. I have a few pictures of the ADI powders and they are different.
Also the local powders tend to have various coatings and deterrents applied for various reasons, better flow, less static, less flash, etc.
The concept is that ADI's testing has shown these powders to be close enough to each other to be used as substitutes. Now obviously, there is going to be a volumetric difference between say Alliant Steel and VV N105, but if you say take a load listing of VVN105, convert the grains to CC's then take the CC's and convert to grains of Alliant Steel, you should have a safe starting load to work from according to ADI.