Re: 300 wm ??
I played with H1000 and the 200 gr AB for a bit during load testing. I don't remember exactly how many grains I worked up to, but I do remember that there was a good deal of powder crunching when seating the bullet. I didn't stick with it very long as I was getting better velocity and accuracy with Re 22 without the compressed load.
Ignorance can be treated with education, sadly there is no cure for stupidity.