On paper this appears to be a good powder. Very slightly faster than H110 and about the same as SP3.
I suspect its the same as 4100 and others but cant confirm it.
I can find no data specifically for this powder. I know it replaced AA9 for which there is scant data.
I emailed explosia.cz who tell me they have no 410 data for it.
I have just mailed them back pointing out it says on the label its suitable for 410 !
I plan on using this in 3inch cases for clay busting.
Anyone using it?
Cheers, Tony