Must be my Dillon is defective. It will be reliably off by 0.3 grains within a couple measurements.
I own an RCBS digital but I find it sucks when trickling charges. Haven't used it in years.
I'm not going to argue with Rick on the Chargemaster,
...the RCBS 505 is hands down the best of the beam lot. It's amazing to me how RCBS is the only one that (IMO) managed to perfect such a seemingly simple instrument, or how badly so many other popular and classic brands managed to screw up the usability of such a simple and effective instrument.