I guess I don't "understand" inherent accuracy. I agree with drover that most cartridges are not fully taken to their potential.
Some of you may remember my mentioning Mike Turner in New Mexico. Mike is the extreme 30-30 guru. Mike is a very competitive short range BR guy-up to 300yds. He shoots consistent 5 shot .2 or less groups with his 30-30. That being said I guess all cartridges are "inherently" accurate.
Now about hunting rifles, I think my 9.3X62 may be my most accurate hunting rifle. A 25-06 is a POS.
My opinion.