To armexman:
Yes, of course, I read lot of literature and manuals. Yes, of course, I use 8mm Max moulds bullets by different way in different calibers. Yes, of course, I (personally) tested all variants which I mentioned. Yes, of course, I measured speeds and it was OK. What is wrong???
... and I found, as little suprise for me, for more rifle 8mm or similar calibers I can use load of 28grs. of ACC5774. This my The Load for me. And this is my answer to the question "what powder and how much" ...