Why use the dippers in the first place? From many folks I have talked to, they seldom give the desired results. Almost always much lower.
Do you have a scale? Use it WITH the dippers. Paul5388 taught this to me over this very forum. Maybe he will have some pictures to share in just a little bit.
Here's how you do it: Take a dipper that is JUST too small. Fill it, dump it into the scale's pan. Get another dip, tilt it over the scale's pan and TAP it gently over the pan. Stop when the beam begins to swing upward, adding a little as needed. If you go over, start again.
This is time consuming BUT each and every load has the same exact weight of powder in it, that is, as accurate as you WANT to be.
I would NEVER use just the dippers. Certainly not for full power loads either.
I was using H110 and W296 a week ago or so. They are the EXACT same powder with variances found to be only the same as lot to lot of each on respectively. The variances in case fill changed dramatically from powder to powder. I used the same weight for each powder and got the results that the recipe called for (within tolerances). The setting on my Lyman #55 was WAY different though.
So, the moral to the story is, use a scale, in a long winded sort of way!