H4895 is ADI's AR2206H. Manufactured by ADI and sent in bulk containers to Hodgdon in the USA who simply then package it in their own smaller containers.
Most all ADI powders are sent to Hodgdon and relabeled, they are exactly our powders. The "H" is for Hodgdon" and they call it their "Extreme" powder range.
AR2206H is the opposite end of the powder range for your 70gr bullets in a .243W and too fast, again you will suffer a loss of velocity,it really is more suitable for lighter bullets like the 55gr. It is what I use for my 55gr Hornady V-Max in my .243W.
The list is here....
http://www.hodgdon.com/msds.html Look at the list of Extruded Powders to see all the equivalent names as sold in the USA and listed in their reloading data.
Hodgdon by the way do all the load testing of powders at their own testing facility in the USA then send the data to ADI to publish here in the ADI Reloading Manual. All the figures are exactly the same, my information comes direct from a friend at ADI.
I have used W760 but I got better results with ADI AR2208. I do a lot of load testing and it's not unusual for me to try 3 different powder for the same weight bullet to see which performs the best. I sometimes may use a different powder for different bullet brands of the same weight. These days I tend to use only Berger Bullets and buy in bulk.