My current powder measure is made by Hornady......and it's a great tool IMO.

Prior to that I had a Herter's It also was a fine tool.

The development of short cut powders and super short powders has helped a lot for consistency but the biggest assist was when I realized that +/- 1/2 grain of extruded powders in cases like the .270 and .30-06 (and others of that volume and larger) really didn't mean squat. Just load them and go hunting.

Ball powders feed quite accurately in any measure I've ever used and as time moves ahead I find more and more of them in my cupboard.