Well I believe you set your sights to low on the powder charge and the chrony backs me up on this as long as the FPS takes a reasonable rise the powder is not wasted.
Also it makes a big difference what powder you are talking about.Black or Pyrodex reach the peak of efficiency between 110 and 120gr but you can still gain quite a few FPS after that. I personally don't care how much powder it takes to make a gun shoot best, actually a lot of people don't realize it but there are two or three accuracy load for most guns with the same bullet, there is often one between 70 and 95 grains [not usually the tightest group but a decent accuracy load just the same good for the kids and the ladies that are recoil sensitive] and an other one between 100 and 120 and yet another one at 130 to 150with Blackhorn.
Now if your allergic to recoil or faster bullets then you will be happy below a 100gr but if you use Blackhorn it won't even reach its burning clean pressure with a light bullet with that kind of a load.
I feel a lot of guys shoot below an efficient load. I know I recommend loads like that some times usually for the kids that are learning to shoot, I just was teaching a 13 year old with 70 gr and a 200 gr bullet yesterday, because he needs to learn how to move with the recoil before he shoots a decent load that's why I would not let him use the bench also. I am afraid from what I have read that there are some people on here that could use 101 in recoil handling.