Same experience here along with the others, no difference other than case fill.I've used both in my larger cased rounds especially with longer barrels and have not seen any different except the volume inside the case.
Just use the 7mag for hunting and only recently started reloading for it. Rifle shoots so accurately with Rem. Express CoreLokts I haven't bothered.Must be a very light load in the 7 mag for a pound to last that long! lol