I use a redding powder measure also, and it works very well with my rifle powders, but unique is truly uniquely bad metering.

To clarify the issue, I am loading for .38 special, .357 magnum,
.41 rem magnum, and 44 rem magnum. I hope to be loading for 45 long colt soon if I can find the right 25 to add to the collection.

Regards Mill