So far, I have tried RE25, H1000 and Retumbo, all 3 have performed adequately with both 130 and 140 Accubonds, but the standout in my rifle has been RE25.
I am trying Win Supreme 780 in the near future, so will post results as they come to hand.
Can someone suggest some start loads with H50BMG, this is the only slow slow powder available here.

Cheers.
cool