Navy_Chief
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- Dec 4, 2017
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- 44
Very true. The baffle makes things consistent with varying levels of powder in the hopper without having to worry about it though.
RCBS Uniflow Powder Measure keeps doing me wrong
- Thread starter jski
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Very true. The baffle makes things consistent with varying levels of powder in the hopper without having to worry about it though.
Hondo 60
Member
I have 3 measures.
10 Lee Pro Auto Disc
2) RCBS Uniflow
3) Dillon PM.
All 3 have powders they like & powders they don't like.
Dillon doesn't like 2400 (Lee likes it just fine)
10 Lee Pro Auto Disc
2) RCBS Uniflow
3) Dillon PM.
All 3 have powders they like & powders they don't like.
Dillon doesn't like 2400 (Lee likes it just fine)
dh1633pm
Contributing Member
When I am using a powder measure of this type I check every tenth round. My hornady can sometimes drift a hair, but only a hair. You throw makes a difference too. Hit upward hard, then downward hard. Hard enough to hear them. That way your moving the handle consistent.
Kp321
Member
I agree that your increase in load weights was caused by the powder settling. I never even start weighing charges before 15 cycles then throw 5 between adjustments. I am a firm believer in baffles, I made mine out of an old credit card and it made the measure much more consistent no matter what the level was in the hopper.
You messed up. Take responsibility for the mistake. If you never take responsibility you will keep making those mistakes. Learn to double check everything or find another way to get your ammo.
PS You might want to use a hatchet on that digital scale. They can be treacherous. I have 2 digitals and 5 mechanical scales. I NEVER rely on a digital to weigh powder.
Get a trickler and try to trickle powder into a digital. You will find a lot of stick and slip action.
PS You might want to use a hatchet on that digital scale. They can be treacherous. I have 2 digitals and 5 mechanical scales. I NEVER rely on a digital to weigh powder.
Get a trickler and try to trickle powder into a digital. You will find a lot of stick and slip action.
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GW Staar
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- Feb 26, 2009
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- 3,694
You've received some good advice.....and finally Ireload2 suggested that the Gempro may be partly at fault. I agree with him....my Gempro is less reliable than my Uniflows. I always check it first when weights go screwy, and it's usually the culprit when checked against my 10-10 mechanical scale. That said, powder density is the second most common problem.....but not so much with ball powder. So that's raising my eyebrows?..... What's left? You got an enemy changing the Uniflow when you're taking a bathroom break??
Do remember that an electronic measure can be affected by fluorescent lights too close, heat/cooling vents too close (air currents), fluctuating voltage in the electric lines/or weak batteries, and that's besides the temperature and humidity variations that affect powder weight of any density coming out of any measure.
And finally........or maybe first of all......don't forget the Gempro measures in two decimal places. When I first got mine, I was cursing it because is was all over the place........then I realized that the digit "all over the place" was the 1/100 of a grain not the 1/10 of a grain decimal.
Do remember that an electronic measure can be affected by fluorescent lights too close, heat/cooling vents too close (air currents), fluctuating voltage in the electric lines/or weak batteries, and that's besides the temperature and humidity variations that affect powder weight of any density coming out of any measure.
And finally........or maybe first of all......don't forget the Gempro measures in two decimal places. When I first got mine, I was cursing it because is was all over the place........then I realized that the digit "all over the place" was the 1/100 of a grain not the 1/10 of a grain decimal.
Same here. Worried about it too much.When I first got mine, I was cursing it because is was all over the place........then I realized that the digit "all over the place" was the 1/100 of a grain not the 1/10 of a grain decimal.
someguy2800
Member
Can we call off the mob?
The powder measure is just a variable displacement measuring cup. Just like the measuring cup in the kitchen only it's adjustable. Just like measuring flour in a cup if you don't quite get the cup full you won't get a full cup of flour. If you cram it in there with a knife you'll get a bit more that a cup.
Anyway the only explanations is that either the lock nut came loose, the measure wasn't quite getting full on the first test charges, or there is an issue with the scale.
It helps if you get into a rhythm with the uniflow of tapping the handle twice at the top and bottom of each throw. This helps to settle the powder more consistently in the cup and makes sure it fills totally. This isn't usually much of an issue with ball powder.
The powder measure is just a variable displacement measuring cup. Just like the measuring cup in the kitchen only it's adjustable. Just like measuring flour in a cup if you don't quite get the cup full you won't get a full cup of flour. If you cram it in there with a knife you'll get a bit more that a cup.
Anyway the only explanations is that either the lock nut came loose, the measure wasn't quite getting full on the first test charges, or there is an issue with the scale.
It helps if you get into a rhythm with the uniflow of tapping the handle twice at the top and bottom of each throw. This helps to settle the powder more consistently in the cup and makes sure it fills totally. This isn't usually much of an issue with ball powder.
buck460XVR, I got a call back from the RCBS rep and the 1st thing she asked: "Are you using the small cylinder?" To which I replied: "Not sure what you're talking about?"
Had I been more careful in my reading of your post, I would have known what she was talking about. Mea culpa!
"For weights < 10 gr., the large cylinder is inconsistent" is the take-away from my conversation with this RCBS rep. And she seemed quite knowledgeable. I ordered a small cylinder on eBay.
I'm still not sure how this explains the consistent throw weights around 9.5 gr. following the reloading of the 100 cartridges?
Had I been more careful in my reading of your post, I would have known what she was talking about. Mea culpa!
"For weights < 10 gr., the large cylinder is inconsistent" is the take-away from my conversation with this RCBS rep. And she seemed quite knowledgeable. I ordered a small cylinder on eBay.
I'm still not sure how this explains the consistent throw weights around 9.5 gr. following the reloading of the 100 cartridges?
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