Ufff Da!  Numbers don't lie.

I weighed 10 charges each from the two measures.

First one, then the other, alternating.  This was to negate any difference in 'warm up' or other variation due to first vs. second series of measurements.

Each was set to ABOUT 2.0 grains of W296.  (Experiment will be repeated with a flake and/or stick powder.)

Variation?  Ideal was +/- 0.09gr.
                Harrell was ZERO variation.

Scale readout was to 0.01 gr.

Technique was the same, lever up, pause, lever down, measure, empty back into the reservoir, and check for zero on the scales.

loaded 50 rounds, groups of 10ea.  Adding 0.1 gr each time.  (I'll use 5 each in 2 rifles to get a feeling of grouping; and refine from there.

Measured runout of the bullets (just a two or three of them)  - 0.002 TIR as measured on the widest part of the ogive.

SBoomer wrote on Mar 19^th, 2025 at 9:23am:


Thanks for the reminder.  I'll dig out the dryer fabric softener sheets....  (they leave a conductive coating).

I have used RCBS Uniflows for a while. With the small pistol meter drum it is as accurate as I think possible, last time using I was charging cases with Universal a flake powder. It was dumping the charge of 9.0 grains almost every drop. And when it was off it was only off a tenth. I dont think any drum style could do much better than that. A lot of it is consistent technique when operating the handle. Ive also tried different positions of my baffle. and find that if I put about a little less than a inch of powder in then the baffle, then fill the bottle I have a bit better results.  I also have a newer Uniflow 3 and its also accurate. Just not as good as the Uniflow with different meter drums. However when first getting it I was testing it and dropped 19 charges in a row of a ball powder I use for .44mag. Then it varied by 1 tenth. So Im fairly happy with it. The powder measure has to fit my needs. Ive always wanted a Harrel, But for my purpose I will spend the money on primers and propellant instead.

I have a couple of measures, but one old Lyman 55 is dedicated to the loads I use in a .32-40. For eons, without change (just a check of a few each time I use it) it threw 14.1 grains of IMR 4227. Then when we went to the "new" IMR 4227, the weight of the setting changed to 14.0 grains. Seemed to shoot the same, so no change was made. If I toss a hundred charges and weigh them the the total would be 1,400 grains plus or minus a grain or two. The individual variation is nearly nothing. I keep the thing about half full, and when it drops, refill it and dump a few to settle stuff. My technique is as consistend as I can be with crisp, moves of the handle to each stop, but not heavy-handed. When the mood strikes I take it apart and wipe the innards with graphite and reassemble. Inside the plastic gets wiped with a dryer sheet pretty often. And, never put another powder into it. Works for me, leaving the expeiments and other powders, mostly stick, for the RCBS that does fairly well there. I had a
Redding measure but a buddy borrowed it and moved to somewhere Wyoming- I think. Some pal.That was a good measure.

Similar experience to Randy, except I used a Redding still do, low charges 1.5 to 2 gns . 452AA bullseye,PB, 700X, I just check after every 10 on the scale. Works for me. Cheers Mal in au.