Now that my cases are sorted out ,and sized ,which was easier than i thought it would be ! Thanks Rob,you were right.I need some loads and ideal powder to use ,i am just going to use woodleigh 570gr proj to begin with, at 2300 ,i dont want or need to go any harder than that.i would like to use Hodgdon powders which i believe from memory is the same as Australian ADI powders .or maybe Reoader 15 if anyone has suggestions to get me started Thankyou

Reloader 15 is the best powder that I found for 90 percent of the big bores. You will probably be looking at 110 grains of Reloader 15 with your 570 grain bullets to get to 2300 fps. That is with a 24 inch barrel. The A Square manual shows 113 grains of reloader 15 to push a 600 grain bullet at 2316 fps with an average pressure of 43000 psi.
Take good care,
Dave

110 grains of RL-15 gave me 2405 fps with 570-grainers from a 23" barrel: Best possible load!!!!

110 grains of H4350 Extreme gave me 2050 fps with 750-grain A-Max bullets in a 23" barrel and 2150 fps in a 27" barrel.

You can go way hotter than these middle of the road loads IF YOU DARE!!!