Back in the mid 70's when I bought my Ruger 7mm, I worked up a load for it that served me well for many yrs. I don't know where I ran across the data, some reloading book that I can't find in all my junk. Anyway the data called for a max of 64 grns of H4831 with a 175 gr jsp and a mag primer. I worked up from somewhere around 60 grns to the max of 64 and found the later to be the best. I would load up 20 and it would last 2-3 yrs depending on how much hunting I did. I never saw any glowing signs of over pressure, but would pitch the brass after 4-5 reloads.
Lately, I can't find any loading data that calls for much more than 58-59 grains max.