Norma MRP, and second up was IMR 7828 at ten fps slower
Thanks. I have two or three pounds of 7828 just sitting on the shelf asking to be burned up.
the 7RM is a good use of it. i use only 7828 in my 264s and 7 WSM.
another calc. i forgot was to do 26" 7mm RM speed. it was 3342 fps.
that means you loose 34 fps per inch of barrel