I've been loading for my 7mag for 16yrs.What I've seen is,most of the published loads are well below the max.My rifles seem to shoot their best when loaded near max.Every rifle is different.Try different powders,bullets,seating depths,do the ladder test for your loads,watch for pressure signs and get a chrony if you don't have one,so you know where your at with your loads.Velocities you can expect:
with 140gr bullets-3150-3250fps
with 150gr bullets 3100-3200fps
with 160gr bullets 3000-3100fps
Some may get higher,depends,this will give you an idea about what to expect from your loads.
I usually load the lighter weight bullets,139-140gr in mine for primarily deer.I like:
65.0grs of IMR-4350
69.5grs of either Reloader-22 or Winchester WXR
Here's to good shooting for you.
7mag 3 shots 100yds on Flickr - Photo Sharing!