The fact is that most arow shafts weigh the figures you posted, meaning 8 to 9.5 GRAINS/ inch. Inserts usually weigh 15 to 20 grains (for carbon). Vanes weigh between 8 and 12 gr each (4"). The nock weighs about 13gr. Then add your point of 100gr and you're looking at a 400+ gr completed arrow, which is not all that unusual.

There are ways of shaving as much as 100gr off that figure for shooting bows of about 60# or less, but most guys are probably shooting about 400gr. Some, like me, shoot as light as 315gr and there are those that like heavier arrows of as much as 600gr. Things to be taken into consideration are bow weight and drawlength, the size of the animal to be hunted (deer are NOT big game). You try to reach a balance between speed and silence, with silence being the more important consideration in a hunting rig.

Hope this helps.