It has been my long standing understanding that for example, RL-22 = MRP/205 with the RL-22 undergoing significantly less QC steps, thus the temp sensitivity.
I use/d both in a 270 win. 205 was more consistent (low ES) with hardly any temp sensitivity.
As usual start a bit low and increase till the bolt won't open.
some where i read the head balistician at norma could find nothing that worked like mrp-2 in the 6.5-284. he had access to a lot of canister and non-canister powders.
Well they don't make it anymore. Yesterday I was able to get my load verified out to 1000 with it and kept everything under 1 moa. Not as fast as I wanted but I think the Lilja barrel just doesn't like to go that fast. Happy with my results so I will load all of it that I have and worry about it again in a couple years.