If you reload, I'd *personally* stick with printed data from a trusted source (ie reloading manual)
That being said, I have used load "data" from unofficial sources when it was in line with other known data.
Just a few questions so we can help you:
1. Any velocity requirements (High, low, doesn't matter)?
2. Any specific bullets you are looking at (Ballisitc tip, hollow point, etc)
3. Any specific components you want to use/not use (powder, primers, etc)?
As with any firearm, you'll have to play around with what the rifle likes. Many prefer one component over another, different OAL, etc. This will ultimately determine a "good, accurate load" for your 7mm RM.