Monolithic Solids: 338 Terminator Loads

[alcesgigas]

I searched here and another site without success so here's the question (s):

Having reached several goals with 300 grain loads I'm now trying 255.5 grain Flatlines and 275 grain Peregrines. I'd really like to take advantage of others experiences loading these cartridges if possible. So, will anyone step up and provide some experienced based information on loading H-1000, HUS869, H50BMG, RL33, RL50, and VVn570 in this weight range, preferably with the specified bullets?

Thanks