This is true, but in my experience the lighter loading's, less than 150 gr., do not fly very well. Nor do loading's over 190 gr. unless you've bothered to rebarrel with a faster twist. Not singling out the venerable -06 for this, all cartridges have similar limitations.Did they ever?
This next video says that there are over 500 possible loadings for the .30-'06. It's hard not to like the round.