Hi guys, thank you for the links! I have scanned through them, but we are limited with components in SA. I will take a good look in the next few days.
I manage to go to the range and got the following results all with Hornady 286gr SP bullets and Remington Large rifle primers in RWS new brass:

S365 65gr @ 2109f/s
S365 66gr @ 2158f/s
S335 55gr @ 2265f/s
Norma 202 50gr @ 2011f/s
Vihta N540 50gr @ 1979f/s
Vihta N550 54gr @ 1922f/s

these are all just start loads! Looks like the S335 and Norma have potential as the loads is very low?